“Intermarriage”

Mr. Hardwood had two daughters by his first wife, the eldest of whom was married to John Coshick: this Coshick had a daughter by his first wife whom old Hardwood married, and by her had a son; therefore John Coshick’s second wife could say:

My father is my son, and I’m my mother’s mother;
My sister is my daughter, and I’m grandmother to my brother.

The Cabinet of Curiosities, 1824