Fred, John, William, charles and Matilda Koepper are the names that I found in the NY 1900 soundex. Fred is my gg-grandfather. I dont know who the other koeppers are but I am hoping that they are somehow related. charles lived in Queens NY and was married to Julia Wagner, they had one child named charlotte. Charles was b. May 1860. William Koepper was a boarder of Charles Gortz in Manhatten, he was b. july 1843. Matilda was living alone in Mount Vernon, NY and was b. aug. 1832 in germany. John Koepper Sr. was b. jan. 1869. He was married to Maggie and they had ch. Philip, marie, john jr., Hilda, george, and alfred.they lived in Mt. vernon. this is all the info I have. I do have some more birthdates for the children listed. I hope this info helps someone and hopefully we can find a connection for all these koeppers.