Sinclair Lewis · Adolf Hitler Were Sinclair Lewis and Adolf Hitler alive at the same time? Yes. Sinclair Lewis and Adolf Hitler were alive at the same time for 56 years, from 1889 to 1945. Sinclair Lewis was 4 when Adolf Hitler was born.Sinclair Lewis was 60 when Adolf Hitler died, aged 56. Sinclair LewisAmerican writer and playwrightBorn 7 February 1885 · died 10 January 1951, aged 65Adolf HitlerDictator of Germany from 1933 to 1945Born 20 April 1889 · died 30 April 1945, aged 56 Mahatma GandhiVladimir LeninAlbert EinsteinSinclair LewisAdolf HitlerRonald ReaganNelson MandelaDonald Trump Sinclair Lewis and Adolf Hitler 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.