While you 2 are looking for Homer, did you come across these California Slocums?
More details about this line: Harvey Granger Slocum was born 9/17/1837 and died 4/11/1869 in Sacramento City, Calif. He married Mary Walker. Ellen Rebecca Slocum was born 9/15/1840 and was living in San Francisco during 1882 when the Slocum book was published. Any descendants?