One suggestion is it derives from the Latin comes stabuli ('Count of the Stable'), a title used in the Byzantine Empire and later adopted by the Franks.
[2] Laurence M. Larson argued it derived from Old Norse stallari and was introduced into England by Cnut the Great (r. 1016–1035).
It possibly indicated someone with a seat (steall) in the king's hall, in other words, an official within the royal household.
[4] The first confirmed occurrence of staller in England was by Edward the Confessor (r. 1042–1066), who used it for senior members of his personal household.
Bondi likely performed some service related to royal hunting because he is titled forestarius in Domesday Book.