Seems this post is old - so I don't know who will get this but...
My grandmother put together her own ancestry book. In it I seem to be related to Josefa Ortiz de Dominguez through her grandaughter Quirina Dominguez de Mackenney.
Our story is that Quirina is the grandaughter of Josepha, she married James George Armstrong Mackenney in 1837 (doctor from Virginia). They had Adelaide Mackenney (daughter), Adelaide married Dr. Gideon Auson Hawley. Gideon and Adelaide had my great grandmother Ester Hawley, etc. etc. until me.
So my question would be was Quirina Dominguez de Mackenney related to Josefa Ortiz de Dominguez? Was she in fact a grandaughter of Josepha?