Posted on: Ottawa Co., Michigan Query Forum Reply Here: http://cgi.rootsweb.com/~genbbs/genbbs.cgi/USA/Mi/Ottawa/715 Surname: Hamstra, Duisterwinkle ------------------------- My great grandmother's sister Martha (Martje) Hamstra (b. 1860 in Burum, Friesland, Netherlands) came to the U.S., married a Duisterwinkle and settled in Grand Haven, Michigan. I am looking to find out her husband's first name and any other information about their descendents.