Do you have a documented source for your Millie's parents? I am descended from William and Mildred Cauthen through their son Anderson.
I have two different versions of the list of children of William Cauthen and Mildred Pascall, but neither includes a Millie who married a Connell. I have a Milly marrying a Michael Johnson. I'm not saying you are incorrect -- my info is secondhand so I won't swear by it -- but I'm curious about your documentation.