I am helping an old friend who is dying of Multiple Myeloma cancer to finish his genealogical research. I am looking for:

THOMAS C. THOMPSON
abt 1866, Wabash, Wabash Co., Indiana
Father: David V. Thompson
Mother: Lucy D. Caroline Thompson
m. Lillian E. Wilson, 27 May, 1888
children (1): Victor R. Thompson (b. 1889, Wabash Co., IN)

Supposedly moved to California approx. 1890, that's where the trail gets cold

I did find a possible match in the California Death Index, stating same birth year and the death year was 18 Jan 1946 in MADERA, CA.....but don't know if this is the correct man.

Any insight or information would be appreciated.