Abraham bar Hiyya

Abraham bar Ḥiyya ha-Nasi (1070 Barcelona, Catalonia – 1136 or 1145 Narbonne, France) was a Jewish mathematician, astronomer and philosopher, also known as Savasorda (from the Arabic صاحب الشرطة Ṣāḥib al-Shurṭa "Chief of the Police") or Abraham Judaeus. He was born in Barcelona and scholars suspect he travelled to Narbonne where he is thought to have died.