His apparent Irish links add to the long list of arguments which challenge the idea that the "Gaelicisation" of eastern Scotland began in the time of Cináed mac Ailpín; indeed there are good reasons for believing that process began before Óengus's reign.
Os seus aparentes lazos irlandeses engádense á longa lista de argumentos que defenden a idea de que a "gaelización" do leste de Escocia comezou na época de Cináed mac Ailpín; de feito, hai boas razóns para crer que o proceso comezou antes do reinado de Óengus.