Individual Details

1850 Census in CA shows an Lemuel G. Brown, of the right age and born in MO.
1860 Census: Placer Co CA, Twp 8, Michigan Bluff post office, p/99/853; Household 1652; L. G. Brown, age 33, a Miner, born in MO & living with two other single men.
1870 Census: Placer Co CA, Twp 5, Bath P.O.; p.17/428; Family 210; Lemuel Brown, age 44, Woodman, born MO; living with Benjamin Mills from Tennessee
1880 Census: Placer Co CA, ED 72, Michigan Bluff Precinct, p.8/302D; Family 118; Lemuel G. Brown, age 53; Wood Chopping, born MO, father born SC, mother born Virginia. Has two boarders, also single men. Apparently never married.

From the Placer Co CA Great Registers of Voters:
1871, p.4, line 1404 "Samuel" Green Brown, age 40, miner, resides Forest Hill.
1880, p.3, line 224 Lemuel Green Brown, age 53, born MO, resides Michigan Bluff, registered 5 Apr 1879
1890, p.5, line 379 Lemuel Green Brown, age 64, born MO, resides Indian Springs, registered 11 Sep 1890
1894, p.7, line 419 Lemuel Green Brown, age 66, 5' 9 3/4", light complexion, blue eyes, gray hair, laborer, born MO, voting precinct Indian Springs, P.O. Westville, registered 3 Sep 1894.
1896: same as 1894. Not found in 1898. Either died or moved away from Placer Co.

The Placer Co records of Lemuel are indeed the same man. In March of 1879, John Samuel stated that his brother Lemuel resided in Placer Co, California.

Birth	29 Jun 1826	Saint Francois County, Missouri
Death	2 Apr 1907	Stanislaus County, California

Father	WILLIAM BROWN (1794 - 1874)
Mother	Elizabeth Halstead (1806 - 1880)
Sibling	Jane Brown (1828 - 1917)
Sibling	Rebecca E. Brown (1829 - 1905)
Sibling	John Samuel Brown (1831 - 1908)