The Rev Hugh Mullin's book on Aghadowey a parish and its linen industry gives the Muster Roll on Ironmongers estate ca 1630 (ie including some townlands of Aghadowey). There is a Robert Mungomery The Hearth Money Roll indexed in same book has Alexander Montgomery in "Bellbrillen" presumably Ballybrittan ca 1663 Pyke's 1725 survey of tenants has John Montgomery in Bwalla O'Cahane. Not all townlands are extant in this survey, and it's after your Montgomerys left anyhow 1765 Alsop's survey Ballicaan John McGomery No Montgomerys in Balybrittan or Ballycahan in 1833 Tithe Applotment Survey Linde L