 The struggle to claim Ingeborg's inheritance from her murdered father would later involved Norway in intermittent conflicts with Denmark for decades to come.Ingeborg was promised in marriage by the Danish regency government to crown prince Magnus, the son and heir of King Haakon IV of Norway.Ingeborg arrived in Tønsberg on 28 July 1261, after she being retrieved at the instruction of King Haakon from the monastery in Horsens ("dominikanerkloster ved Horsens").