Tullyhonwar (Irish: Tulaigh Thónmhar) is a townland located in the Barony of Boylagh, within the Civil Parish of Killybegs Lower and the Electoral Division of Ardara, County Donegal.

Tullyhonwar spans an area of 1,001,463 square metres, which equates to approximately 0.39 square miles or 247 acres.

Tullyhonwar shares borders with Drumnacross and Strawoaghter Glebe to the west, Kilrean Upper to the north, and Tullynaglaggan to the east.

The area includes the subtownlands of Tullylava and Sturrian.

From the Griffith’s Valuation entries for the townland of Tullyhonwar here is the breakdown of the households and landholdings listed:

• Bridget McGuire & Denis McGuire: Occupying house and land parcels under the immediate lessor Rev. G. N. Tredennick.
• Laurence Hanlon: Listed with a house and land.
• Patrick Devir: Appears across multiple entries, holding land and sharing a joint or sub-divided property arrangement (along with joint occupiers like James O’Donnell, Owen Devir and Margaret Devir).
• John O’Donnell: Occupying house and land.
• Owen Kennedy: Listed with house and land holdings.
• Catherine Meehan: Occupying land.
• John Keary: Listed with a house and land.

Tullyhonwar residents in the 1901 Census – https://nationalarchives.ie/collections/search-the-census/search-results/#census_year=1901&county=Donegal&ded__icontains=Ardarn&townland=Tullyhonwar&limit=100

Tullyhonwar residents in the 1911 Census – https://nationalarchives.ie/collections/search-the-census/search-results/#census_year=1911&county=Donegal&ded__icontains=Ardara&townland=Tullyhonwar&limit=100

Tullyhonwar residents in the 1926 Census – https://nationalarchives.ie/collections/search-the-1926-census/search-results/#county=Donegal&ded__icontains=Ardara&limit=30&townland=Tullyhonwar

Tullylava is in the townland of Tullyhonwar.

Sturrian is in the townland of Tullyhonwar.