Do you know when and where William and Lundy died?Obits often list survivors, also a good way to pick up married names of any female members of the family (such as Anna and "Sis").
TX Dth Idx 1964-1998:
Roy Uranus McCaghren, d 18 Apr 1967 Harrison Co, TX; Single.
I suggest you check out the Tarrant Co, TX GenWeb site, plus the archived section of the TX GenWeb Project for Tarrant Co, TX records.On that search feature type in McCaghren and up come several records.Check out those birth records for the 1920, 30 and 40s.I think you may find some of your McCaghrens.
http://www.rootsweb.com/~txtarran/http://www.rootsweb.com/~txtarran/ -- Tarrant Co, TX GenWeb-- If you haven't already done so, be sure to check out all your GenWeb county sites, every state.They vary on amount of information they contain.And then do the archived sections, too.I don't know the difference, but some records on one site, some on the other.
Annie May McCaghren and Okley Warren Lawyer had a child in 1939.And, checking TX Dth Idx and SSDI:
Okley W. Lawyer, b 9 Jul 1913; d 26 Feb 1976 McLennan Co, TX; last residence Whittney, Hill Co, TX; SS card issued in TX.
I'm not finding Annie, maybe she's still alive(?)Or, remarried.
I wonder if the Edna McCaghren and H.C. Connaly who have an infant in 1929 could be "Sis".I find Harley C. Connally on TX Dth Idx and SSDI, b 1 Aug 1892; d 5 Mar 1972 McLennan Co, TX; last residence McGregor, McLennan Co, TX; SS card issued in TX; and Single. [note died same county as Okley Lawyer]