JANSSEN, HENRY LUDWIG B. 08/28/1886 in NEBRASKA MMN. SCHMIDT D. STANISLAUS on 07/19/1947
JANSSEN, ANNA B. 07/16/1886 in MICHIGAN Mother's Maiden name PONTO Father's surname not listed D. STANISLAUS on 01/26/1966
Is Anna there, who died in 1966, the one you want? If so, either the California Death Index is wrong or your source that says Feb 9 1963 is wrong. I have seen both in the course of looking up obits for 6 years; CDI wrong and people's sources wrong. If she is the one, I will look for her in 1966, then 1963. I just don't want to make myself seasick reading microfilm for nothing.
The same site has JANSON, ETHEL Maiden name ZABEL but she was born 04/23/1908and died in Orange County.