More information from Ulsterheart:
(I believe Culligary is the same as Coolageery)
As late as 1785 a James Hamilton held 75 acres in Millix. This was probably that small are at the foot of Millix known as Culligary where now stands Martray Manor. There were certainly Hamiltons in Culligary at the time. Andrew Morrison arrived from Scotland, and got the Culligry property when he married Jane Hamilton in 1683, or part of it. Jane may have inherited the property if William, who died so young, had been the heir. That is, Jane Hamilton may well have been a sister of the John Hamilton whose name appears on Kerog's oldest extant stone memorial.
Also from Ulsterheart:
The inscription on the Muliks stone reads "Hereunder lyeth the body of John Hamilton Gent of Muliks who departed this life the (?) year of his age, the 10 Anno 1667". So, this John Hamilton
of Millix must have been born early 1600s. His family is almost certainly the same as that of Archibald Hambleton who in 1628 had at Tate Cosker a bawn 312 X 16 ft. and who on 24th March of that year got permission to hold markets on May 20 and Aug. 24 at Killmorgan. Cosker or Kosker (forest fort) is near the foot of Millix, and the Hamilton structure probably stood where Martray Manor stands today. "Martray" was originally just the fort to the east.
Later in 1628 another Archibald Hamilton lived in Moy Enir Castle near Grange Falls on ground originally granted to Turvin in 1611, passing to Sir Gerald Lowther in 1615 and to Pringle in 1619. But there are indications that the Hamiltons were at Martray in Elizabethan times. 58 Anyhow they are the first of the eight families who dominated Kerog in the 1600s -- Hamilton, Morrison, Haper, Neilly, Erskine, Moutray, Harvey, Speer. The first and most illustrious of these were the Hamiltons.