In the Oconto, WI marriage record of Henry Rehder and Annie Johanne Marie Nielsen, it says that his parents are Henry Rehder and Katherine Ottosen. The 1900 census says he was born in Aug 1863.
Johan Heinrich Rehder was born 2 Aug 1863 and baptized on 6 Sep 1863 in Skt Hans, Odense, Odense, opslag 126 nr 35. His parents are Johan Marcus Heinrich Rehder and Cathrina Frederikka Ottsen, age 31. One of the witnesses is Ludvig Rehder.