Johann Heinrich Germer was born about 1769, place and parents unknown. Catharina Sophia Ahrens was born 5 May 1769 in Herrenburn, Meckl. – Str., daughter of Peter Hinrich Arends and Mararetha Dorthea Rumohr. They married 15 Nov 1808 when they were each 39. They had Johann Martinn Jochim Germer born 9 Jan 1809. Catharina Sophia Ahrens was baptized 20 Oct 1962 and endowed 13 Dec 1962.