He made poems for nine powerful men, including the Swedish jarls Sone Ivarsson (c. 1107), Karl Sönason (c. 1137) and for the Swedish kings Sverker I of Sweden (c. 1150) and Jon Jarl.
Jon Corzine | Jon Stewart | Jon Pertwee | Jon Anderson | Jon Voight | Jon Krakauer | Jon | Jon English | Jon Bon Jovi | Jon Vickers | Jon Lord | Jon Langford | Jon Brion | Jon Huntsman, Jr. | Jon Faddis | Jon Tester | Jon Ronson | Jon Fishman | Birger Jarl | Uli Jon Roth | Jon Foreman | Jon Hendricks | Jon Fosse | Jarl | Jon St. James | Jon Spencer Blues Explosion | Jon Postel | Jon Lovitz | Jon Lech Johansen | Jon Lebkowsky |