United Kingdom - Passport & Nationality - British Citizenship by Double Descent (Rhodesian Father)
This is a very complex interpretation of the British Nationality legislation that was enacted after the dissolution of the Federation of Rhodesia and Nyasaland in 1964. This anomaly was discovered by Philip Gamble in December 2014 while researching a client's claim to British Nationality based on his father's birth in Southern Rhodesia.
The solution relies on a candidate's birth before 01.01.1964, the father's birth in Southern Rhodesia and a UK-born grandfather.
Because recent anti-gender discrimination legislation has not extended to these old colonial claims, the claim can only come through the father. It also requires the parents to have been married at the time of your birth.