She was born in Annapolis to Dr. Charles Carroll and Dorothy Blake. Her mother died when she was about 7 years old, so she was raised by her step mother Anne Plater. She married Nicholas Maccubbin in 1747 at St. Anne’s Episcopal Church in Annapolis. She had seven children, including five sons. When her older brother, Charles Carroll, Barrister, died without leaving an heir, two of her sons, Nicholas and James, assumed the Carroll last name and inherited his fortune.
Nicholas Maccubbin (1710 – 1787)
He was the son of Zachariah Maccubbin and Susana Nicholson. He was a merchant and High Sheriff in Annapolis. At 37, he married 20-year-old Mary Clare Carroll in 1747 and they had seven children. He served as a Captain in the Anne Arundel County Militia and the Maryland Militia during the Revolution.