My grandfather was Joseph Knoblauch. According to the information I have, he was born in Wurtenberg/Stuttgart, Germany on April 15, 1868.The date you list is 1865.Could this be the same person?His father was also Joseph (Josef). My mother, Vivian, was his daughter.
I'm not sure if I responded to your message before.If this is a repeat, and there is no connection, please let me know. I'm still looking for more information.