Larry, sorry for the late response! I do not check the Grolle genforum very often. I believe I have your Casper in my database. Casper Henry Grolle (b.1851, d.1928)is my second cousin 3 times removed. I only knew of one child (William). I have some of the Grolle Line back to the 14th century. I would love to exchange information. My line is not decended from Wilhem or Henry (this is a cousin line). Our progenitors are further back. I am interested in dates and places of Birth, Marriage, Death, and Burial for all Grolle decendents. Let me know if you have any specific interests, or I can send you everything.