Omar Khayyam
18 May 1048 — 4 December 1131
Omar Khayyam (1048–1131) was a Persian poet and polymath, known for his contributions to mathematics, astronomy, philosophy, and Persian literature. He was born in Nishapur, Iran and lived during the Seljuk era, around the time of the First Crusade.
A memorial on Digital Cemetery, an endless map you can explore. This grave stands at coordinates 18, -18.