Son in law
Your grand daughter's husband is your grandson-in-law.
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
Your daughters husband is you son-in-law.
Uncle
Your brother's daughters are your nieces
Your brother's daughters are your nieces
Mary Lee Cantwell's husband was literary agent Robert Lescher. They had two daughters - Katherine and Margaret.
Son-in-law.
London with her husband and twin daughters.
the daughter's cousin
She had her husband, Kind Prasutagus, and two daughters.