The copy of "The Age of Gold" by H.W. Brands sitting in front of me says you are wrong about married women's property in 1850's California. From the soft cover, pg. 283, regarding the constitutional convention held in Monterey in 1849:
`A proposal to permit women to keep control of their property upon marrying led to discussion of the relative merits of the common-law and civil-law traditions. "I am not wedded either to the common law or the civil law", observed Halleck, "nor, as yet, to a woman; but having some hopes that some time or other I may be wedded, and wishing to avoid the fate of my friend from San Francisco [a crotchety old misogynist], I shall advocate this section in the constitution, and I would call upon all the bachelors in this convention to vote for it." Enough did to win the measure's approval.`
So unless there was a constitutional amendment created a few years after the constitution itself that I'm not aware of, married women actually were allowed to keep their property in California. Indeed, the text from the original 1849 constitution states, in part:
`Sec. 14. All property, both real and personal, of the wife, owned or claimed by marriage, and that acquired afterwards by gift, devise, or descent, shall be her separate property; and laws shall be passed more clearly defining the rights of the wife, in relation as well to her separate property as to that held in common with her husband. Laws shall also be passed providing for the registration of the wife's separate property.`