Its chief geographical features are Annagh Lough,[6] the Dhoogue stream, Scotchtown Island, Monkey's Island, a chalybeate well, Bray Wood, some drumlin hills reaching an altitude of 200 feet (61 m) above sea-level and the Shannon-Erne Waterway which flows north along the western boundary of the townland.

Bray Wood is the finest and most extensive area of woodland along the Shannon-Erne Waterway, consisting principally of Ash (Fraxinus) and Hazel together with Oak, Elm and Rowan trees.

The undergrowth consists of Holly, Blackthorn (Prunus spinosa) and Bramble, with a rich ground flora.

Scotchtown Island has a wet woodland flora, dominated by Alder and Weeping Willow (Salex spp).

The original non-canalised Woodford River Channel on the boundary with Cloncoohy contains rich wetland floras.

An Inquisition held in Cavan Town on 20 September 1630 stated that Walter Talbot's lands included one poll each in Townaeiateragh and Tawnaowteragh.

[8] James Talbot married Helen Calvert, the daughter of George Calvert, 1st Baron Baltimore of Maryland, USA, in 1635 and had a son Colonel George Talbot who owned an estate in Cecil County, Maryland which he named Ballyconnell in honour of his native town in Cavan.

[9] Gwyllym's name first appears in the area as the owner of Tenaghoghtragh and Tenaghightragh in the 1652 Commonwealth Survey which lists the townland as belonging to 'Captain Gwilliams'.

The only inhabitants of Ballyconnell who paid the Hearth Tax in the 1664 Hearth Money Rolls were Thomas Gwyllym, John Squire, Henry Jordan and Denis Alarne, but this would have included both Doon and Annagh townlands as Thomas Gwyllym was the owner of Ballyconnell Castle and lived in Annagh.

[11] The Gwyllym estate was sold for £8,000 in 1724 to Colonel Alexander Montgomery (1686–1729) of Convoy House, County Donegal, M.P.

[16][17][18] Griffith's Valuation of 1857 lists only one landholder in Annagh, Dr. George Roe, the owner of Ballyconnell House.