Citizenship by descent through your mother: which countries blocked it, and how to fix it now

For much of the 20th century, many European countries let only fathers pass citizenship to their children. A woman who married a foreigner could also lose her own citizenship. Families that trace their line through a mother or grandmother keep running into those old rules. Today almost every country we cover treats mothers and fathers equally for new births, and most have a way to repair the old cases: a registration, a declaration, an option, or a court case. A few have closed theirs, and Monaco still limits which mothers count.

This page puts the country rules from our guides side by side. Find the country and the birth date that matters in your family, then follow the link for the detail.

The one date that matters: the birth of the woman’s child

Citizenship by descent is judged one birth at a time, under the law in force at that birth. So the question isn’t when your ancestor emigrated or when the law changed. It’s when the child of the woman in your line was born, and whether the father was a citizen too. Our Italy 1948 rule guide gives the classic example: an Italian great-grandmother who emigrated in 1905 and whose child was born in 1928 breaks the line in 1928, not 1905.

Two things follow. If the father in that generation was also a citizen, the line usually passed through him and the mother’s position doesn’t matter. And if the woman’s child was born after the cutoff, the old rule never touched your family.

Country by country: old rule, cutoff and the fix today

The cutoff is the date before which a birth through a mother could fail. For Germany, Austria and Greece it applies to children born in marriage to a foreign father.

Countries not listed: our other guides don’t record a mothers-only rule that still affects claims. The Nordic countries, Switzerland and Liechtenstein had a separate gap for children of unmarried fathers, covered in citizenship by descent if you were adopted or born outside marriage.

Fixes you can use now, without a court

United Kingdom: section 4C, Form UKM

The British Nationality Act 1948 passed citizenship through fathers only. If you were born before 1 January 1983 and would have become a citizen had your mother been able to pass it on like a father, section 4C of the 1981 Act lets you register. GOV.UK says to use Form UKM if your mother is British and lists the £130 ceremony fee. In some cases it works even if your mother was herself British by descent. Registration normally makes you British by descent, which limits passing it on to your own children born abroad. Our guide to British citizenship through your mother explains the test and the documents.

Germany: the § 5 StAG declaration (deadline 19 August 2031)

Until 1975, a child born in wedlock took German citizenship only from the father. Section 5 of the Nationality Act lets the people this excluded become German by written declaration if they were born after 23 May 1949. It also covers children of mothers who lost citizenship by marrying a foreigner before 1 April 1953, and the descendants of everyone in these groups. The excluded ancestor doesn’t have to declare first. It is free, has no German test, and the BVA in Cologne must receive it by 19 August 2031. People born on or before 23 May 1949 have no § 5 right; the Federal Foreign Office points them to discretionary naturalisation under § 14. Details in our § 5 StAG guide.

Netherlands: the option procedure

The IND states it plainly: a child born before 1 January 1985 whose mother was Dutch and whose father was not did not automatically become Dutch, but can become Dutch through the option procedure. The option also reaches that person’s children, so a Dutch grandmother can still matter. See the Dutch citizenship by descent guide, and watch the separate 13-year rule for Dutch citizens living outside the EU.

Malta, Hungary, Switzerland and Liechtenstein

• Malta: a child born abroad to a Maltese mother between 21 September 1964 and 1 August 1989 didn’t become Maltese automatically, but can register on Form I. Malta guide.
• Hungary: a person born before 1 October 1957 to a Hungarian mother and a non-Hungarian father who didn’t become Hungarian at birth can claim citizenship by declaration under § 5/A. If that doesn’t fit, simplified naturalisation is open to descendants of Hungarian citizens but needs conversational Hungarian. Hungary guide.
• Switzerland: children born before 1 July 1985 to a Swiss mother and a foreign father can apply for facilitated naturalisation if they have close ties to Switzerland. That is an application, not a right that applies automatically. Switzerland guide.
• Liechtenstein: children of Liechtenstein mothers born before the 1996 reform can acquire citizenship through a facilitated procedure. In 1997 the Constitutional Court struck down conditions that treated them less favourably than children of Liechtenstein fathers. Liechtenstein guide.

Luxembourg: Article 23 instead of a mothers’ remedy

Before births in 1969, a married Luxembourg mother couldn’t pass on her nationality. Luxembourg has no route aimed at those births, but the Article 23 option does much the same job one or two generations down. It lets an adult opt for Luxembourg nationality if a parent or grandparent holds or ever held it and it wasn’t passed on. Either side of the family counts. It stops at grandparents, so check whether your parent should opt first. See Luxembourg Articles 7 and 23.

Fixes that need a court or a case-by-case decision

Italy: the 1948 court case

Before 1 January 1948 only fathers could pass on Italian citizenship. The Constitutional Court (judgment 30/1983) and the Court of Cassation’s Joint Sections (4466/2009) opened the way to recognise these lines, but only an Italian court can do it; consulates and comuni reject them. Law 74/2025 then narrowed all claims by people born abroad with another citizenship. A 1948 case through a great-grandmother is viable only if it was filed by 27 March 2025. Newer cases need a parent or grandparent who meets the new conditions. Read the Italy 1948 rule guide and Italian citizenship by descent before you hire anyone.

France: no single date

Two rules affect French maternal lines. Before 10 August 1927, a French woman who married a foreigner automatically lost her nationality; after that date she generally kept it. And before 9 January 1973, children born abroad to a French mother and a foreign father were under special rules, so each case needs its own analysis. Proof of French nationality for people born abroad comes from a court’s nationality service, and the 50-year rule can also apply. See the France guide and the 50-year rule.

Partial fixes and closed doors

Greece: a declaration that only goes one generation

Before 8 May 1984, a child born in marriage to a Greek mother and a non-Greek father was not Greek at birth. That child can become Greek by declaring in person under Article 14(1) of the Citizenship Code, but only from the date of the declaration. Their children become Greek with them only if they are minors and unmarried on that date. So if your parent is the person affected and you are an adult, their declaration won’t make you Greek, although it shows Greek descent for omogenis naturalisation. Check every branch: a grandmother whose own father was Greek may carry a line through him.

Poland: father-first until 1951

Under the 1920 Act, a child born in marriage took the father’s citizenship, and a Polish woman who married a foreigner generally lost hers. That makes many female-line claims with a birth before 19 January 1951 fail. Our guides don’t describe any declaration that repairs this, and recommend specialist review. A second trap: a child born abroad to one Polish and one foreign parent between January 1951 and August 1962 got Polish citizenship only in limited cases. See Polish citizenship confirmation.

Austria and Spain: the windows have closed

In Austria, a child born in marriage before 1 September 1983 took citizenship only from the father. Those children could claim it by declaration, but that window closed in 1988. If the family left because of Nazi persecution, § 58c works through mothers or fathers with no generation limit.

In Spain, women who married foreigners before the 1978 Constitution lost their nationality. Law 20/2022 let their children opt, but appointment requests closed at 23:59 local time on 22 October 2025. What remains is Article 20.1(b) of the Civil Code: anyone whose father or mother was originally Spanish and born in Spain can opt for Spanish nationality at any age. See Spanish citizenship through grandparents.

Monaco: the mothers’ rule still applies

Monaco is the exception where the limit is current law, not history. A child of a Monégasque father is Monégasque from birth. Through the mother, the child is Monégasque only if she was born Monégasque, has a Monégasque-born ancestor on her side, or became Monégasque by naturalisation or reinstatement. A mother who became Monégasque by declaration after marriage doesn’t pass it on at birth. See the Monaco guide.

When the woman in your line lost her citizenship by marrying

The second problem is different. Even where a mother could pass on citizenship, she couldn’t pass on what she had lost. Our guides record marriage-loss rules in Germany (before 1 April 1953), Poland (under the 1920 Act), Hungary (under the 1879 Act), France (before 10 August 1927) and Spain (before the 1978 Constitution). Our Luxembourg checker notes a similar rule there. Germany’s § 5 and Spain’s closed Law 20/2022 route covered these cases; elsewhere, the marriage date against the child’s birth date decides it. That is why a woman’s marriage certificate is often the most important document in a maternal-line file.

How to check your own maternal line

1. Mark every woman in the line. For each one, note her child’s date of birth, the father’s citizenship at that date, and whether the parents were married.
2. Compare each birth with the cutoff in the table above. A birth after the cutoff, or a father who was a citizen too, usually means no problem in that generation.
3. Find her marriage record. It shows whether she married a foreigner, and when. Many countries also ask for it to link her maiden name to the child’s birth certificate.
4. Check who the remedy is for. Some fixes are personal to the person born before the cutoff (Greece, Hungary); others reach their descendants (Germany, the Netherlands).
5. Watch the deadlines. Germany’s § 5 closes on 19 August 2031. Austria’s and Spain’s routes are already closed.

Our document chain guide and documents checklist cover the paperwork, and the free eligibility checker asks the mother and date questions for each country. For how these routes compare in generations, see citizenship through grandparents.

Frequently asked questions

Official sources

• IND (Netherlands): Dutch citizen by birth, acknowledgment or adoption (children born before 1 January 1985 to a Dutch mother; option procedure)
• GOV.UK: British citizenship if you were born before 1983 to a British parent (Form UKM, £130 ceremony fee)
• Bundesverwaltungsamt: Erklärungserwerb (§ 5 StAG)
• MITOS (Greece): Acquisition of Greek nationality by declaration due to birth to a Greek mother
• Netherlands Worldwide: becoming Dutch abroad through the option procedure
• Liechtenstein National Administration: registering children of Liechtenstein parents

Checked against these sources on 29 October 2026. The IND and GOV.UK pages were read directly on that date; the other rows restate our individual country guides, which list their own official sources (including the Italian, Polish, Austrian, Hungarian, Maltese, Swiss and Monégasque authorities). These are summaries, not legal advice. Only the authority of each country can decide your case; confirm with it, or its embassy or consulate, before you apply.