William Henry Rockwell of White Plains, NY, and California (R203 in the 1st edition, R200 in the 2nd):

Ernest Crewdson informs me, in e-mail of 11 March 2008, of the details of his daughter Frances:
"Frances Rockwell married one Halsey Trenchard (date unknown). They had one child, Ella, born 8 October 1879, at Mount Vernon, New York, and died 18 March 1965 in the County of San Bernardino, California, not far from where my wife's grandparents, John Henry and Pearl Rockwell, were living in Fontana in said County. A few years before Ella's death, my wife paid her a visit. Halsey Trenchard was born 6 Nov 1852 and died 16 Nov 1928, Los Angeles, California."