[3] Both Matrona and Maponos were worshiped in the area around Hadrian's Wall, which may account for the prominence of Modron and Mabon in literature connected to the Brittonic Hen Ogledd (Old North) of Britain.

[3] John T. Koch suggests that Saint Madrun, a daughter of Vortimer, may also be connected, based on the similarity of the names and some elements of their stories.

[5][6][7] The first reference to the name Modron may be in the poem Pa Gur yv y Porthaur, in which "Mabon am Mydron", a "servant of Uthr Bendragon", is listed as one of King Arthur's warriors.

Recovering Mabon from his mysterious captors is one of the various challenges faced by King Arthur and his men in the story, and the adventure comprises a significant portion of the text.

She reveals that she had been condemned to wash at the ford until she conceived a son by "a Christian", and bids Urien to return at the end of the year to receive the child.

Euron may an error for Gwron; John T. Koch suggests the name may ultimately derive from an older form *Uironos, meaning "divine man, husband, hero", implying he is Modron's spouse.