I showed Luther and Electra from 1920 census in your query regarding her York family, here they are in 1930.
1930 census Palo Pinto Co, TX:
Parson(sic), Luther, h, 33, M @ 19 yrs of age, b TX, TX, TX " Electra, w, 33, M @ 19 yrs of age, b TX, AL, AL " Neva B., d, 14, b TX " Alfred, s, 12, b TX
1910 census Palo Pinto Co, TX:
Parson(sic), Maren(sic), h, 72, b AL, AL, AL " Luther, s, 14, b TX, AL, MS [Both are listed as single, I don't know why, Maren is probably a widower.I'm assuming the elder Parson is named Marion, but I cannot find him on the 1900 census under any spelling.I was hoping to find his wife still alive.Also, I wonder if Maren isn't the grandfather not the father of Luther???]
From the 1880 census from FamilySearch site, this is only "close" match for Marion Parson/Parsons.Near match on age, and birth location is AL.You might try tracking this man, see if anyone else is working on him, and either prove or maybe disprove him.(^_^)
1880 census Liberty, Van Buren Co, AR:
Category: Name;Relationship to head of household; Marital Status; Gender; Race; Age; Birthplace; Occupation; Father's Birthplace; Mother's Birthplace.
Marion PARSONSSelfMMaleW39ALFarmerSCSC Francis P. PARSONSWifeMFemaleW39ALKeeping HouseSCSC James W. PARSONSSonSMaleW13ALWorks On FarmALAL Alace PARSONSDauSFemaleW10ALALAL Henderson J. PARSONSSonSMaleW3ARALAL Nathaniel PARSONSSonSMaleW1ARALAL