If you have an ancestor who disappeared from the old homestead and family memory between 1851 and 1944, he or she might have gone to the Golden State to make a fortune, but found trouble instead. The Genealogy Center has San Quentin Prison List of Convicts (979.4 M33RO and M33ROA) which provides an alphabetical list of inmates with their convict numbers. The introduction cautions a researcher to be aware that first and last names were occasionally reversed, and that, of course, spelling of names could be inaccurate. No further information is provided in the index, but there is a guide to the years in which specific numbers were issued to narrow down a search. The records themselves are held by the California State Archives.
Missing Ancestor: Gone to California — and Prison?