There birth place is off, but could this be your Mance?

1920 Census Pct 4, Bowie Co., TX
Ed Johnson Head M B 41 married b. AR Father MS Mother MS Occu: Farmer
Mary Johnson Wife F B 23 married b. AL Father AL Mother AL
Mansce Johnson Son M B 19 single b. OK Father AR Mother USA
Rich Johnson Son M B 15 single b. AR Father AR Mother USA

1930 Census Dist 33, Pct 7, Bowie Co., TX
Mansie Johnson Head M Neg 28 married 1st at age 19 b. AR Father AR Mother AR Occu: Farmer
Sufella Johnson Wife F Neg 19 married 1st at age 18 b. TX Father USA Mother USA
Marge Johnson Daughter F Neg 5?mon single b. TX Father AR Mother TX