Borgarhreppur was formerly a rural parish (hreppur) in Mýrasýsla county, west Iceland, named after the ancient farm and church estate Borg á Mýrum which was occupied by Skallagrímur Kveldúlfsson, one of Iceland's original settlers.
Hítardalur is a big farm and ancient church and rectory estate in Mýrasýslu, Borgarbyggð.
Hraunhreppur was formerly a rural parish (hreppur) in Mýrasýsla county, west Iceland.
Norðurárdalshreppur was formerly a rural parish (hreppur) in Mýrasýsla county, west Iceland.
Skalla-Grímr did as his father directed, and when he arrived in Iceland, he discovered the casket had come ashore in the Mýrar district, near Borg.
Stafholtstungnahreppur was formerly a rural parish (hreppur) in Mýrasýsla county, west Iceland, described as a "typical farm parish".