Gertrude Stacey was the second child of Lavinio and Letitia Setacci. She was their only daughter. She was Claud’s sister, making her your great great great Aunt.
Gertrude was born when her parents lived at Waldemar Street in Fulham, not far from Fulham Palace or the Putney Bridge.
At age 30 in 1921 she is working in the civil service as a temporary clerk at the Home Office. She worked at White Hall and lived with her family in Wimbledeon. One wonders if she and her father Lavinio would have taken the train together to get to work. She is single.
In age 48 in 1939 she is living in Worthing Sussex on the South Coast of England. She is living with her Aunt Helene Nachmann Stacey , wife and now widow of her Uncle Atillio. Gertrude is listed as single. As far as I know she never married.
Gertrude dies in 1973 at age 81 in Worthing Sussex.