Sigrid Undset · Donald Trump Were Sigrid Undset and Donald Trump alive at the same time? Yes. Sigrid Undset and Donald Trump were alive at the same time for 2 years, from 1946 to 1949. Sigrid Undset was 64 when Donald Trump was born.Donald Trump was 2 when Sigrid Undset died, aged 67. Sigrid UndsetNorwegian writerBorn 20 May 1882 · died 10 June 1949, aged 67Donald TrumpPresident of the United StatesBorn 14 June 1946 · living, 80 as of September 2026 Karl MarxAlbert EinsteinSigrid UndsetAdolf HitlerRonald ReaganDonald TrumpVladimir PutinMichael JacksonBarack Obama Sigrid Undset and Donald Trump in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.