I checked out the lady in your photo, and the reference to her brother, and details are as follows;
Mary Henrietta Sinnott [ nee Luce] DOB 22.08.1879 in Pensylvania Died 15.07.1966 in San Diego, CAL aged 86 years. MarriedJohn Sinnott on 28.09.1904 in San Diego. No Children recorded of the marriage. No trace on John Sinnott location - post wife's death.
Edgar Augustine Luce; DOB 20/05/1881 in Pensylvania Died 27/08/1958 in San Diego, Cal aged 77 years. Unmarried
Their parents were
Moses Augustine Luce DOB 13/05/1844 in Payson Adams, ILL Died on 28/02/1904 in Pensylvania [ six months before MHLMarriage] Married Adelaide Mantania of Busnel, ILL.
After the marriage [C.1877 ish]it would appear that Moses Luce resided in Pensylvania until his death in 1904.
This explains the California connection with the photo. With no family to either of the Luce children chances of placing photo are slim - but one never knows!!! You could check the CAL newspapers for death notices to see who the mourners were.....