Aaslov was the son of Gudrun and Skule, paa Rein. Rein was the large estate in south Trondheim's Amt,(District). Aaslov was married to Tora Skoftesdatter. Her father was Skofte Agmundson paa Giske, an island near Aalesund, in Sondmore. These families were wealthy and influential people in Norway at this time.