Eleazar of Worms
Eleazar spent most of his life living in Worms. He was a Jewish pietist. Eleazar wrote many books and poems on praising God, and studied liturgical poetry, halakhah, theology, ethics and exegesis. Some of his works were printed but many have been lost. Eleazar witnessed and suffered the persecution of Jews. Eleazar's wife, two daughters  were murdered, and he and his son were badly injured.