I am trying to find descendants of my Grandfather's siblings. My grandfather was Henry (Heinrich) Hadler (b 8 Aug 1871), son of Dietrich and Mary (Heidt??) Hadler. Dietrich (b 1830's) and Mary (b.1836?) both were probably born in Hanover Germany, as were all the children. Known siblings to Henry were Johan Hadler, Adelheid Hadler (m. Fuhr in Canada?), and Herman Hatler (all born in 1860's). We think the family immigrated to SE Missouri (Perry County) in 1872, and Mary died shortly after arriving and is buried at Immanuel Luth. in Altenburg MO. Thnaks for any information you can provide.