Question: Who is Emma Of Austrasia's father-in-law?
Sentence (from "Eadbald of Kent"): The Kentish royal line made several strong diplomatic marriages over the succeeding years, including the marriage of Eanflæd, Eadbald's niece, to Oswiu, and of Eorcenberht to Seaxburh, daughter of King Anna of East Anglia.
Relevant evidence: No