My mother-in-law is a Toensing and Paul was her cousin. Her name is Ruth Erna and is a daughter of Louis Toensing and Anna Stephan born in St Paul 11 Mar 1912. I have Ernst Frederich coming to the US with his wife Clara Elizabeth Weingartner in 1872.He followed a brother Frank who came with his family and mother Anna Clara in 1870. I have done some research and it is possible that Johann Conrad Toensing and Johan Heinrich were brothers.I have several baptism records from Germany where the sponsor is listed as Johan Heinrich Toensing. I also noted a vaccination record that listed both Johan Heinrich and Johan Conrad.