I am looking for information concerning my great grandparents, John "Captain Jack" Adams and Mary Ann Murdock, daughter of Charles Murdock and Jane H. Hall. Captain Jack hauled mules on the Great Lakes in the ship "Hawk". He probably arrived in the area during the early 1870's. Mary Ann's parents immigrated from Northern Ireland, probably in the early 1850's. Since I live in California, any referrences would be greatly appreciated.