Who Was Alive

Were Avicenna and William the Conqueror alive at the same time?

Yes. Avicenna and William the Conqueror were alive at the same time, from 1027–1028 to 1037.

Avicenna

Persian polymath, physician and philosopher

Born AD 977–983 · died 18 June 1037

William the Conqueror

King of England from 1066 to 1087, Duke of Normandy from 1035 to 1087

Born 1027–1028 · died 9 September 1087

Avicenna and William the Conqueror 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.