▁a ▁unit ▁formed ▁in ▁April ▁ 1 9 2 1 ▁under ▁Div is ional ▁commander , ▁Se án ▁Bo yl an . ▁The ▁Division ▁consisted ▁nine ▁brig ades : ▁ 1 st ▁Brigade ▁( s outh ▁Me ath ▁& ▁north ▁K ild are ); ▁ 2 nd ▁( Nav an ▁& ▁Tr im ); ▁ 3 rd ▁( K ells , ▁Virginia ▁& ▁M ull agh ); ▁ 4 th , ▁Del vin ; ▁ 5 th ▁( M ull ing ar ▁& ▁north ▁West me ath ); ▁ 6 th , ▁Ed ender ry ; ▁ 7 th ▁( Na as ▁& ▁south ▁K ild are ); ▁ 8 th ▁F ing al ; ▁and ▁ 9 th ▁( D rog h eda ▁& ▁south ▁L outh ). ▁Dun boy ne ▁got ▁its ▁name ▁from ▁Bo ann , ▁the ▁god dess ▁of ▁the ▁River ▁Boy ne . ▁The ▁River ▁Tol ka ▁runs ▁through ▁Dun boy ne . ▁ ▁Dun boy ne ▁Castle ▁Dun boy ne ▁Castle , ▁originally ▁a ▁castle ▁was ▁built ▁as ▁a ▁seat ▁for ▁a ▁branch ▁of ▁the ▁Butler ▁dynast y , ▁the ▁L ords ▁Dun boy ne . ▁It ▁later ▁passed ▁to ▁the ▁Mang an ▁family ▁and ▁was ▁the ▁seat ▁of ▁Simon ▁Mang an , ▁H M ▁Lieutenant ▁for ▁County ▁Me ath ▁in ▁the ▁ 1 8 9 0 s ▁and ▁ 1 9 0 0 s . ▁ ▁The ▁house ▁was ▁sold ▁in ▁ 1 9 5 0 ▁and ▁became ▁the ▁Good ▁She ph erd ▁convent , ▁in