Here is William "Billy" Moore in 1850

1850 Sonoma Co, California
Dwelling 120, Family 121
Moore Wm. H. 53 M Farmer 5,000 Kentucky
Moore Nancy 43 F Tennessee
Moore Benj. S. 20 M Farmer Missouri
Moore Louis D. 14 M Missouri
Moore America J. 11 F Missouri
Moore Henry 8 M Missouri
Moore Elijah 6 M Missouri
Moore Martha R. 3 F California

From an anonymous article in Alta California 4 Oct 1859 (as reported by Robert Parmalee "Pioneer Sonoma") "[Of those who came to Sonoma in 1846]...'Uncle Billy' Moore has gone to Clear Lake"