You know him, his ex and yourself far better than I do,
therefore your guesses will be far nearer the truth than mine.
That you discovered it implies that you mistrust him and spy after him.
Your daughters husband is you son-in-law.
Your grand daughter's husband is your grandson-in-law.
Uncle
Mary Lee Cantwell's husband was literary agent Robert Lescher. They had two daughters - Katherine and Margaret.
Son-in-law.
the daughter's cousin
London with her husband and twin daughters.
She had her husband, Kind Prasutagus, and two daughters.
He is your grandson by marriage or grandson in-law.
Yes. If your husband's cousin is his first cousin, the cousin's daughters and your children are second cousins to each other. If your husband's cousin is his second cousin, the children are third cousins to each other.
She discovered he was homosexual.
yes. She did have daughters. She had six of them. Also, she had a husband.