Part of the Runriket...there are two runestones at Risbyle.
"The two runic stones here at Risbyle were raised att the beginning of the 11th centure and they are among Upplands oldest. Here we meet the Skålhamra family, one of the powerful dynastics which lived in the district around lake Vallentuna during the Viking Age. The test on the stone nearest the Skålhamra road mentions Ulvkättil, Gye and Une who 'had this stone raise after Ulv their good father. He lived in Skålhamra'."
"ulfkitil * uk * kui uk + uni + þiR × litu * rhisa × stin þina * iftiR * ulf * faþur * sin * kuþan on * buki * i skul(o)bri * kuþ * ilbi * ons * at * uk * salu * uk * kusþ muþiR * li anum lus * uk baratis"
"Ulfkætill ok Gyi ok Uni/Unni þæiR letu ræisa stæin þenna æftiR Ulf, faður sinn goðan. Hann byggi i Skulhambri. Guð hialpi hans and ok salu ok Guðs moðiR, le hanum lius ok paradis."
"Ulfketill and Gýi and Uni/Unni, they had this stone raised in memory of Ulfr, their good father. He lived in Skolhamarr. May God and God's mother help his spirit and soul; grant him light and paradise."
"ulfR * iuk i barstam * iftiR * ulf * i skulobri * mak * sin * kuþan * ulfkil lit akua"
"UlfR hiogg i Baristam æftiR Ulf i Skulhambri, mag sinn goðan. Ulfkell let haggva."
"Ulfr of Báristaðir cut (the stone) in memory of Ulfr in Skolhamarr, his good kinsman-by-marriage. Ulfkell had (it) cut."