Ji=ohn SLATER'S parents, Henry/Heinrich SLATER b.1826 Germany and Elizabeth HAAKE b.1827 Germany were married about 1850. In 1855, they immigrated to the U.S. and lived most of their lives in Schenectady County, NY. I believe John was the fqther of Carl and Johnny. What is the date and place of John's birth, marriage, death, and burial? What was the name of his wife/wives?