I've hit a brick wall in my family tree with my great-great-grandfather, Apolonio Pena, who in February 28, 1866 married Marina Lopez in Rio Grande City, Texas. He and Marina had at least five children: Jesusa (born ca. 1873), Francisca (born ca. 1874), Juan (my great-grandfather, 1875-1932), Isabel (male, born ca. 1884), and Guadalupe (female, born ca. 1880). I don't know when or where Apolonio was born or died, and I haven't been able to find him or his family anywhere in the 1870 or 1880 U.S. censuses; the 1900 does list the young Juan as head of the family, but his parents are out of the picture.
Does anyone have any information on this ancestor of mine? I've also been unable to find any records in Camargo, Mier, Cerralvo or any other Mexican border towns on him, and I now suspect that his family may have actually been from farther north in Texas and only later moved south to the Rio Grande City area.
I'm also trying to establish a possible link between my Penas and some Hinojosas in South Texas. I recently took a Y-DNA test for the patrilineal Pena line, and I found that my only three matches, nearly exact, were to Hinojosas, one from ranches around Edinburg, Texas in the 1870s and another from Matamoros and Brownsville a little later. I suspect that we share a common ancestor from the late 1700s/early 1800s, when a lot of Penas and Hinojosas were intermarrying in Mier, but it's also possible that there was an adoption or illegitimacy along the way.
Any information that you may have would be great. Thanks!