Michael is a San Francisco native who died in Lake County, CA

From the San Francisco Examiner & Chronicle, Sunday, April 23, 1972, Section B, page 7:
ZEMANSKY, Michael Alexander – in Clear Lake Highlands, April 19, 1972, Michael Alexander Zemansky, son of Alexander and Fay Zemansky, brother of John and Alexander Zemansky Jr., and Carol Ann Lippertz; a native of San Francisco.
Services Saturday, 1 p.m.
Daphne, 1 Church Street
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CADI: ZEMANSKY MICHAEL A 1951 08 14 MALE CA LAKE 1972 04 18 20
Cemetery: Russian Sectarian Cemetery, Colma, San Mateo County, CA
Headstone: single, no cameo, written in English
Inscription below:
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Beloved son & Brother
Michael A. Zemansky
Aug. 14, 1951
Apr. 18, 1972
In God's Care
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Parents: Alexander Emil Zemansky (1914-1983) and Faye William Siliznoff (1914-1977)
Known children: John, Alec, Carol, Unknown female (1946-1946), Michael