HENRY POSTHUMA, born Unknown. He married JENNIE SIVITZER, on Unknown. She was born Unknown. Child of HENRY POSTHUMA and JENNIE SIVITZER is: EELKE HENDRIKS (ELI) POSTHUMA, SR., born May 18, 1870 in Dokkum, Friesland, Netherlands; died October 21, 1922 in Courtland Township, Columbia County, Wisconsin.