From A Wiki of Ice and Fire
|Book||Fire & Blood (mentioned)|
Ser Jon Tollett was a knight from House Tollett and a member of the Kingsguard during the reign of King Maegor I Targaryen.
Ser Jon served as a Kingsguard during Maegor's reign. After Maegor's mysterious death, the new young king Jaehaerys I Targaryen offered Maegor's surviving Kingsguard a choice between execution or taking the black. Jon chose the latter.
- ↑ Fire & Blood, Prince into King - The Ascension of Jaehaerys I.