I have quite a bit of info on the Mcdougal family. Im related to William Mcdougal via Nancy Mcdougal Sturm who is my gr gr gr grandmother.he married Catherine Brand. her parents were John and Elizabeth Gibson Brand. She did have a sister who married a Musgrave.a lot of info on this family can be found on rootsweb and other places on the internet.i hope this helps you and anyone else needing info on this family.