Captain James Stewart’s will, and the deeds, refer to him as being of Killiman or Killyman. This is not the same place as Killymoon.
Killyman is a parish, and some or all of it was part of the Manor of Carrigan/Carragan which was acquired by Captain James Stewart’s maternal grandfather Henry Stewart. The Captain apparently inherited the land from his 1st cousin Henry Stewart who died intestate in c1675 (according to Crossle abstracts).
This might be James Forster alias Stewart, from a Betham Administration Abstract (on FindMyPast)
Forster, James, Enniskillen, Co Fermanagh, gent
To Alexr Nesbitt P[rincipal] creditor
Jane F[orster] the wid. & relict
Admon granted 22 Day March 1728
And here is a Chancery bill (FindMyPast) between Jane Forster and her sister Margaret Scott. I think John Stewart alias Forster must be Jane’s son.
21st May 1734
Malone Co, Donaldson Att[orney]
Plaintiffs = John Scot alias Stewart & Margaret his wife
Defendants = Jane Stewart alias Forster & John Stewart alias Forster