Also holds bantamweight title as of 16/02/28; also defeats Will Hurley on 22/05/30 in Clinton, IA (see below); still featherweight champion as of 23/12/19; still/again claims lightweight, featherweight, and bantamweight titles as of 35/04/01.
No longer champion by 40/10/01.
Kid Irish (Loyd Erwin Ireland)
Recognized in Oregon; still champion as of 14/03/20.
Loyd Erwin Ireland 
Recognized in Pennsylvania.
Holds featherweight and bantamweight titles at the same time; still/again claims both titles as of 28/02/19.
Recognized in Connecticut; still champion as of 20/03/17.
Defeats Martin Roch.
Still champion as of 22/04/11.
Still champion as of 22/03/31; loses to Vernon Breedlove on 22/05/30 in Clinton, IA (see above).
Recognized in Iowa.
Billed as champion in Ames, IA.
Billed as champion in Athens, OH.
Recognized in Texas; vacates in 34/05 for his increasing weight.
Defeats Lasser to become the first UWA World champion; vacant in 84 when Solis cannot make weight limit.