Complex sentence: Oney was born about 1773 at Mount Vernon, the plantation of George Washington, to Betty, an enslaved seamstress, and Andrew Judge, an English tailor and indentured servant.
Split into simpler sentences: Oney was born about 1773 at Mount Vernon. Her mother, Betty, was an enslaved seamstress, and her father, Andrew Judge, was an English tailor and indentured servant.