1229 – Martyrdom of Abraham of Bulgaria. While living as an Islamic merchant, he converted to Christianity and is killed by Muslims for changing religions.
Abraham of Bulgaria was a Christian convert from Islam later made a martyr and saint of the Russian Orthodox Church.
He was born in Volga Bulgaria, amongst the Muslim Volga Bulgars in what is now Tatarstan, Russia. He grew to become an Islamic merchant, and was later converted to Christianity. He was killed by his compatriots for his conversion circa 1229. His relics are venerated at Vladimir on the Klyazma.
His feast day is celebrated on March 6, and the translation of relics is also commemorated on April 1.