Agnes McCormack Riddell was born on 1 January 1924 at 14 Udston Rows in Hamilton. She was the second child of Malcolm and Isabella (Lindsay) Riddell.
She married Arthur Walter Crowe in 1948 in Row or Rhu, Dunbarton parish. He died two years later. It is not known if the couple had children during their short marriage or if Agnes married again.
Her marriage record is the last definitive trace I have found of Agnes McCormack (Riddell) Crowe.
Scotland, Statutory Registrations, 1855-2013, Extract of an entry from the Register of Births in Scotland 6472377 CE
Scotland, Statutory Registrations Index, 1855-2013, 1948 Crowe, Arthur Walter - Riddell, Agnes McCormack (503/00 0053)