Yes, the Elan enclave is reported (by non-Elan) to be in the lands disputed by Arithanos and Devendwil. The high concentration of Elan in Arithanos would seem to support this.
Hmm I've found Devendwil on the map, but can't seem to find Arithanos, or is that the number 6 on the map? I can't zoom that far in without the writting becoming all blurry. Arithanos will be where I hail from either way.