Swelldom :: Swell (a.) Having the characteristics of a person of rank and importance; showy; dandified; distinguished; as, a swell person; a swell neighborhood..
Welldoer :: Welldoer (n.) One who does well; one who does good to another; a benefactor.
Welldoing :: Welldoing (n.) A doing well; right performance of duties. Also used adjectively.