New Castle or Greencastle

History of New Castle

New Castle (also known as Greencastle or Northburgh Castle) was a Norman castle built in 1305 by the de Burgh family, the Earls of Ulster. Around 1333 the de Burgh family lost power and New Castle became an Ó Dochartaigh stronghold for over three centuries following. O'Clery mentions a group of Ó Dochartaighs living at New Castle in the mid-1600s.

Click the thumbnails below to open the photos in a larger viewer!

Drone footage & history of Northburg Castle by Peter Homer 2015. 

Other Resources to Check out

Monument Information

The archaeological site at Greencastle in Eleven Ballyboes Townland consists of the castle (National Monument Service RMP# DG022-003----), it's upper ward (RMP# DG022-003001-), and bawn (RMP# DG022-003001-). View more information at Historic Environment Viewer and County Donegal.

Visit Greencastle!

  • Physical Location: 7 The Fort Holiday Homes, Eleven Ballyboes, Greencastle, Co. Donegal, Ireland



The O'Doherty Heritage website is designed to be your place for all things Ó Dochartaigh. Whether your name or ancestry is from a Doherty, Dougherty, Daugherty, Docherty, Dogherty, if your family used another spelling of our name, or if you're from one of our related Donegal families, such as the McDevitt/McDaid, McBride, McConlogue, or others–we welcome you to the O'Doherty Heritage website!

The vision of the O'Doherty Heritage is "Telling our story, uniting us together." This was the same vision of our ancestors, the Ó Dochartaigh patriarchs, when they established our Clan motto, Ár nDúthchas–which means 'Our Heritage'. Below are the goals of O'Doherty Heritage:


  • Share our heritage with our entire Clan

  • Research, document, & bring our history to life

  • Curate a digital Clan genealogy research library


  • Encourage quality genealogical research

  • Promote clan identity and pride in our heritage

  • Facilitate communication amongst our clanfolk


This site is curated by Will Dougherty III under the direction of the Association of Ó Dochartaighs. ©2020 O'Doherty Heritage. Site Policies. I'd love to hear your thoughts on the site, answer your questions, or see you get involved! Email