Hi,

I found two William Bettencourt's who died in 1979 but neither one died in Santa Cruz Co

William Bettencourt
Born: 5 March 1894, CA
Last Residence: San Francisco, San Francisco, CA
Died: November 1979, San Francisco
Source: U. S. Social Security Death Index 1935-2014
I bet the one above was your relative. If you're interested in his obituary, you can order a copy from the San Francisco Library, http://sfpl.org/index.php?pg=2000001701.

I've included the following death info just in case.

Lawrence William Bettencourt
Born: 5 Aug 1917, CA
Died: Santa Clara Co., 24 Sept 1979
Source: California Death Index 1940-97
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