Yes that's the man! I would love a copy of their marriage record if you don't mind.

Here's more on the family:
Adin Dyer Williams, the son of the man I am looking for, died 4 Jul 1934 in Oakland. He married Addie Ament c. 1880
The other children of the Adin born in 1804 or 1810 in NY:

~Sarah (b.1837 in IN-1926 in Downey, CA) married Willis Morrison in 1856 in Muscatine IA . Maybe her Dad was living with her when he died?
~Oscar/Alex (b. 1834, still alive in 1875)
~Amanda (b. 1843 in IN) married 1st Mr. Layton who was dead by 1909, then married Wesley Davis in 1909 in Downey CA. Maybe Dad Adin was living with her and Mr. Layton?
~Mary F. (b. 1846 IN) married John Snyder in 1873 in Muscatine IA