Ollie, here's what I have for Catherine and her parents and siblings (and children):
Parents: Captain Daniel DuVal (1770-1857) and Sarah Carter (1768-1849
Betsey DuVal Bryant (1792-1813) Mary Susan DuVal Proctor (1793-1861) Lucy DuVal Dillard (1795-1849) Catherine DuVal Allport (1797-1869) (your Catherine) Susan DuVal Jones (1799-1846) Ann S DuVal James (1801-1877) James DuVal (1803-1860) George S DuVal (1807-1854) John DuVal (1807 - 1831) Thomas DuVal (1813-1814)
I have 6 children, including Mordecai
I have the following children for Mordecai and Martha L Houston:
William D Mary C Lucy T Martha Broaddus
I hope you find this useful. I have further information. If you are a descendant I would especially like to correspond further with you.