looking for a book title

a boy is sent to live in a household (maybe a jarl’s?) and grows up with the son of that household. they become like brothers but at some point they become more like enemies, and the one boy becomes a king or a lord in a different land. i believe it’s a two or three book series

You want this group:
https://www.librarything.com/ngroups/724/Name-that-Book
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