Clarence lived only 5 days; his twin sister survived him.
Sources
"Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QV22-CQ5N : 13 December 2015), Clarence Alphonsus Brennan, 1888; Burial, Oakland, Alameda, California, United States of America, Saint Marys Cemetery; citing record ID 73965985, Find a Grave, http://www.findagrave.com.
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