I have recently obtained a copy of the will of William Dederick of Milan, Dutchess Co., b. abt. 1785, d. 1857. This document (finaly!) establishes William Dederick and his wife Christina as the parents of my 4th g-grandmother, Maria Dedrick Murch of Rhinebeck. The transcribed will is posted on the Dutchess Co. wills board. This is the first information I have found on Maria's siblings, so if anyone has connections to any of the following Dederick children, I would love to hear form you.
Children of William and Christina Dedrick: William Dederick, Milan Lucy Ann Dederick, Milan Christina Dederick Smith (w of George Smith), Milan Francis Dederick (idiot child), Milan Maria Dederick Murch, Rhinebeck Eliza Dederick Mesick (w of Zachariah Mesick), Schodack, Renssalaer Co. Absolom Dederick, Schodack, Renssalaer Co. Louisa Dederick Williams (W of Nathaniel WIlliams), Milton, Ulster Co. Daniel Dederick, d. bef 1855