 Jaromar allied with the Hvide and Galen magnate clans, who were leaders of Zealand and Skåne.Jaromar had his son and heir Wizlaw I marry a lady from these Danish magnates' families, who were influential in those parts of Denmark that were closest to Rügen.By 1185, Jaromar I had started construction of St. Mary's Church ("Marienkirche") erected in his stronghold "Rugard" (which later became the town Bergen-auf-Rügen).