Johann Mattheson
In 1709, Mattheson married Catharina Jennings, an Englishwoman. In 1715, Mattheson became the music director of Hamburg Cathedral. He wrote some oratorios and cantatas for the church. He left this position in 1728. He was becoming deaf. He had lost his hearing completely by 1735. In 1719, he became the Kapellmesiter in the court of Holstein. Mattheson was active from 1715 to 1740. He translated English books into German. He also wrote books about music.