Mabelle G. Spencer
Maiden name: Whitton
Born 7/11/1892 in Michigan
Died 2/18/1948 in San Francisco, CA

From the obituary:

Mabelle G. Spencer
Sister of Mrs. A.H. Bliss, Mrs. Cecil McCongey and J.G. Whiton
A member of Temple Methodist Church
Funeral at Maneely Chapel, San Francisco, CA