Calathron Aclivoth is a Dorwinedan from the Dorwinion, one of the few remaining members of a once-prominent family. The Clan Aclivoth led a privileged existence in the Dorwinion capitol of Shrel-Kain, where generations of excellent soldiering had afforded them a modest fortune and a respected name. Alas, their success drew the envy of many rivals, and eventually one such rival, the Clan Cliveranth, put into motion a conspiracy to frame the Clan Aclivoth for treason. They conspiracy was a success, and most of the Clan Aclivoth were put to death. Calathron, his brother, and his mother were among the few to escape, fleeing northwest along the banks of the River Running until they reached Esgaroth, where they settled for a time. Calathron was to be a soldier prior to his family's downfall, and he put his martial training to use as a sellsword after his exile. It was mercenary work that led him on a trail away from Esgaroth and what remained of his family, bringing him at length to Bree-Land, where he now dwells.

Laying down his life and sword for the coin of foreigners, rather than for the service of his country and people, is a far cry from the noble life that Calathron had always imagined for himself, and there is no denying that the indignity of it has left him embittered and hostile. Having never accepted the lands of the West as his home, he still pines for the Dorwinion capitol of Shrel-Kain, and plots his vengeful return.

Despite his prickly disposition, Calathron's good nature can still be awakened by things that remind him of his lost home.