Joaquin Carrillo, brother-in-law to Mariano Vallejo, as Joaquin was the eldest son of Mariano's mother-in-law Maria Carrillo. Joaquin's wife was Encarnacion, they received 13,000 acres from Vallejo known as the Llano de Santa Rosa, and built their adobe house in 1846. For more on Maria and her early life see Carrillo Family of Sonoma County, California

It is interesting that the famous outlaw Murieta was also named Joaquin Carrillo.

Here is Joaquin in 1850:
1850 Sonoma Co, California
Carrillo Joaquin 50 M Farmer 26,000 California
Carrillo Guadalupa 20 F California
Carrillo Martha 24 F California
Carrillo Juanita 21 F California
Carrillo Felicidad 16 F California
Carillo Ramon 9 M California
Carillo Innes 7 F California
Carrillo Antonio 20 M Farmer California
Iyendis Bernado 17 M Farmer Chili
Burns William 40 M Farmer England

Here are some more Carillo children, but I'm not sure whose:
1850 Sonoma Co, California
Carillo Julio M 1,200 California
Carillo Duodocio F California
Carillo Jose A. 3 M California