He can be found in Winterhold inside Kraldar's House. If the Dragonborn sided with the Empire, he will instead be the housecarl of Kraldar, the new Jarl of Winterhold. If sided with the Stormcloaks, he can be found hiding in Erikur's house in Solitude, together with Kraldar.
Clear a wild beast out of Thonjolf's home (could possibly be located in Erikur's House in Solitude if the Stormcloaks are sided with in the Civil War).
If stolen from him or Kraldar, he might send hired thugs after the Dragonborn.