Someone walked into the Orange County Archives today with three branding irons he'd acquired from a descendant of Vincente Yorba, Jr. I traced the brands and posted the tracings above. The center one looks like a variation on Bernardo Yorba's original brand from the 1830s/1840s, but it's not exact. Do any of you sharp-eyed readers know the "who" or the "when" of these brands?
I can tell you some places these brands do not appear: They aren't in the "Historic Brands of Orange County" guide in Jim Sleeper's 2nd Orange County Almanac of Historical Oddities. They don't appear in the 1919 California Brand Book (the only edition I have at hand). They also don't appear in the little chart of rancho brands at First American Corp., which is also reproduced in Cindy Tino-Sandoval's Images of America: Yorba Linda. They are also absent from the county's old Brand Book and the other filed brands at the Orange County Archives.
So now the ball is in your court. Please leave your comments in the comments section below. Thanks in advance for any light you can shed.