Before revision: Birgers brothers, Valdemar and Duke Eric, was jealous of his rule over Sweden and merged together in an attempt to depose Birger and gain more land of Sweden .
After revision: , Duke Eric and Valdemar with support from Norway, and Birger partly with support from DenmarkBirgers brothers, Valdemar and Duke Eric, was jealous of his rule over Sweden and merged together in an attempt to depose Birger and gain more land of Sweden .