Did any of your Murdock ancestors locate in Ohio (Geauga, Trumbull, Summit Counties) or Dodge County, Wisconsin, Mower County, Minnesota or Kingsbury County, Dakota Territory (South Dakota)? My great-grandfather's name was Solomon Hezekiah Murdick. Someone thought he was born in New York (in 1826) but haven't found anything to prove that yet. He was married in Summit Co. Ohio in 1850. I believe the Murdick surname was Murdock at some point, also believe I have found his brother, Sylvester Murdock in Geauga County Ohio but haven't tied them together yet. Thought maybe some of this would fit in with some of the information you have. I'll look forward to hearing from you.