Edzard's mother, the dowager Regent Anna of Oldenburg, was afraid that the marriage would lead to Swedish domination, and therefore split the power in Ostfriesland between her sons, something which the king tried to prevent.
Edzard's mother, Dowager Regent Anna of Oldenburg, feared that the marriage would lead to Swedish control, so she split the power in Ostfriesland among her sons. The king tried to prevent this arrangement.