In the churchyard by the Medieval Abbey in Sigtuna is a rune stone and a couple of fragments built into a small building.
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U380 & U381 - "Åsbjörn och kus lät...Gud hjälpe anden...efter Orm..."
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U379 - "The Frisian guild brothers let raise this stone after Torkel, thier guild brother. God help his spirit. Torbjörn cut."