 The same text alludes to Colmán's conflicts with other rulers.Colmán and his brothers are said at one time to have been expelled from "Maethalach" by Máel Umai, the son of Coirpre's brother Fiachna Onchind; for this reason, his descendants were forever excluded from royal rule.Earlier in the text, Colmán is also said to have uttered a curse ("maledictio") which brought down the walls of the city of Ress or Ressad.