However, their regency was unpopular, and when Olaf's illegitimate son Magnus (dubbed 'the Good') laid claim to the Norwegian throne, Svein and Ælfgifu were forced to flee.
Namun, kabupaten mereka tidak populer, dan ketika putra Olaf yang tidak sah Magnús Óláfsson (dijuluki 'yang Baik') menuntut haknya atas takhta Norwegia, Svein dan Ælfgifu terpaksa melarikan diri.