They are in the 1920 census in Wichita Falls census as:
Jim Richard, 28, TX, TX, TX, plumber
Mary, wife, 27, TX, TX, TX
Addie M. Langence or Lawryence, 8, TX, TX, TX (a cousin I believe)
Nellie F. Richard, dau, 8, TX, TX, TX
Arthur L. Richard , son, 4, TX, TX, TX

I think it is possible that this is the same Mary who married a Crenshaw and died in the 1947 in Austin. She may be the Mary who was married to Poke C Crenshaw ca 1921 as shown in the 1930 census in McLennan Co.

Still looking for the marriage record of James Arthur "Jim" Richard/Richards/Richardson to Mary Dean, ca 1909ish. And, for Mary's second marriage to a Crenshaw ca 1921. Both marriages probably in Waco.

Thanks, Trish Elliott-Kashima, Lawrenceburg, TN