This original structure was however replaced by a stone building in the end of the 12th century, possibly initiated by the king living at the royal estate at Hovgården.
[3] Additionally, the so-called Hovgården Runestone, U 11, is located just north of the church, near the ruins of the medieval brick palace Alsnö hus.
[as]kilÆskell: litlet: ritaretta: stinstæin: þa[naþenna* -f-]-[æ]f[tiʀ]: u[n]--...,: faþurfaður: [si]nsinn,[-u-]a[b]o[nd]a: kuþ[an]goðan(?).
[as]kil : lit : rita : stin : þa[na * -f-]- : u[n]-- : faþur : [si]n [-u-]a : kuþ[an]Æskell {} let {} retta {} stæin {} þenna {} [æ]f[tiʀ] {} ..., {} faður {} sinn, [b]o[nd]a {} goðan(?
[4]U 10 was found in 1920 at a grave field at a farm in Darby,[3] which is four kilometers north of the church, and installed in the sacristy adjacent to U 1.