Maharach Ohr Zarua מהר"ח אור זרוע

(1250 - 1310 CE) (1250 - 1310 לספירה)

Orphaned as an infant, he nevertheless followed in his father's footsteps, penning a shorter version of his father's Ohr Zarua. He also wrote many of his own responsa, sermons and halachic essays, while serving as a rabbinic leader in Germany and Austria for most of his life.