William and Eleanor Morris Mills didn't have a daughter Milly.
Their 7 children were: 1. Morning. 2. John. 3. Marvel. 4. Sarah. 5. Eleanor. 6. Elizabeth. 7. Phalby.
Ambrose Mills' sister Mildred "Milly" married 1st William Lavender and 2nd William Walton.
Ambrose Mills' daughter Amelia "Milly" married William Marrimon Featherstone.
Col. William Henry Mills and Rebecca of SC, may have had a daughter Milly.
Ambrose Mills' brother William (not Henry) was NOT Col. William Henry Mills, the Tory Col. in SC. He received land in their father William's will in VA.
30 years ago, my 2nd cousin Mary Mills of Chesnee, SC speculated that William Henry Mill MIGHT be Ambrose's brother because they were both Tories and everyone copied her information and called it the truth and it's been passed around ever since.