on ▁who ▁built ▁it ▁around ▁ 1 5 8 5 . ▁However , ▁there ▁is ▁a ▁document ▁known ▁as ▁the ▁" Register ▁of ▁the ▁Great ▁Se al ," ▁in ▁which ▁King ▁James ▁VI ▁gr ants ▁to ▁the ▁Campbell ▁family ▁the ▁ownership ▁of ▁land ▁in ▁the ▁area ▁to ▁form ▁the ▁Bar ony ▁of ▁Glen ly on . ▁The ▁chief ▁of ▁this ▁Bar ony ▁is ▁said ▁to ▁res ide ▁in ▁" the ▁Tower ▁named ▁Meg g ern ie " ▁and ▁since ▁this ▁be quest ▁is ▁dated ▁ 4 ▁March ▁ 1 6 0 3 , ▁this ▁evidence ▁t ies ▁in ▁lo os ely ▁with ▁the ▁construction ▁date ▁of ▁ 1 5 8 5 . ▁The ▁that ched ▁keep ▁had ▁a ▁sl ated ▁roof ▁added ▁to ▁it ▁initially ▁by ▁Robert ▁Campbell ▁of ▁Glen ly on ▁and ▁add itions ▁were ▁also ▁made ▁in ▁later ▁years . ▁ ▁Architecture ▁ ▁The ▁walls ▁of ▁the ▁castle ▁are ▁around ▁five ▁feet ▁in ▁thick ness ▁in ▁keeping ▁with ▁its ▁role ▁as ▁a ▁def ensive ▁structure ▁and ▁in ▁total ▁the ▁castle ▁is ▁five ▁store ys ▁tall . ▁Each ▁corner ▁of ▁the ▁castle ▁poss esses ▁a ▁square ▁tower ▁which ▁is ▁bra cket ed ▁out ▁from ▁the ▁main ▁body ▁of ▁building . ▁The ▁original ▁castle ▁had ▁few ▁windows ▁and ▁those ▁that ▁do ▁exist ▁are ▁narrow ▁sl its ▁in ▁the ▁wall . ▁This ▁style ▁is ▁entirely ▁in ▁keeping ▁with ▁the ▁fashion ▁of ▁the ▁day ▁and ▁can ▁be ▁seen ▁in ▁numerous ▁other ▁fort ified ▁cast les ▁and ▁keeps ▁constructed ▁around ▁the ▁same ▁time . ▁The ▁original