Najar Lujano in San Miguel el Alto/Arandas

   I have hit a wall in my Najar line with Casimiro Najar Lujano.  He was born ~1810 and married Maria Petra Rodrigues in 1830 in Arandas.  His parents are Jose Angel Najar and Maria Nieves Lujano.  This is where I stop.  Any help from "cousins" or suggestions on where to look would be appreciated.  Thanks.