Was successful via this message board in tracing Willem Engelsman, b. 1819 in the Netherlands.
Are there other descendants and/or siblings of Willem's son Jan, b. 1846, who have family info? Jan left for USA in 1866, married Janna Bloeming and lived in Michigan. One brother, Teunis, arrived in USA later and married Williemena Meier (not sure of spelling).