Latvia - Passport & Nationality - Latvian Citizenship through Registration
It is possible, in some circumstances, to register as a Latvian citizen. The advantage of Latvian citizenship is that it enables such a person to live and work in any EU country (including the UK and Ireland). This route is available to a person who is a descendent of a Latvian grandparent, as long as this grandparent:
1. was Latvian on or before June 17, 1940; AND
2. their descendants registered according to the legal provisions in place at the time.
It excludes those who have obtained citizenship of another country after May 4, 1990.