| Location
Altnamackan is a townland of 621 statute acres 2 roods and 15 perches about three miles south-west of Newtownhamilton. It is bounded on the north and east by Tullyvallen, on the south-east by Skeriff Tichburn, on the south by Ballynarea and on the west by Muckno Parish in County Monaghan. . In the Tithe Applotment Books of 1825 the total area is shown as 409 acres 3 roods and 39 perches (Plantation Irish measure). Name of townland Alt-na-meachan, "The hill of the wild parsnips" (according to 'Aimnneach Gaeilge na mBailte Poist') but I think Fr. Murray's Alt na Máighin, "the hill in the little plane" more likely since the townland was spelt Altnamoighan in earlier English versions.(1). The townland was named "Altnamoighan" in the 1766 Census of Creggan and "Altnamackan" thereafter. Valuation Although the decimalisation of the currency was introduced only in 1971, all of the valuations in the following table have been converted from £sd for convenience.
The 1837 Townland Valuation recorded only houses worth £5 or more a year. There were five such houses in the townland -
Griffiths Valuation records the owner of the townland as Walter McGeough Bond Census of Ireland 1901 The Census enumerated 109 people in 25 households; a ratio of 4.4 people per household. The households occupied a total of 95 rooms; a ratio of 3.8 rooms per household and 1.1 people per room. One of the households had 14 rooms, one had 7 rooms, two had 6 rooms, two had 5 rooms, six had 4 rooms, five had 3 rooms, five had 2 rooms and three had two room. Seven of the houses were thatched. Native Irish Speakers There were no native Irish speakers in the townland. Population Decline The following table sets out the number of houses and population enumerated in the townland in each of the 11 Censuses held between 1841 and 1951.
In the period of 110 years, the number of households dropped by 71.4% and the population by 78.6%. Names of House and land Holders (2) The following table sets out the names of those who owned or rented houses and land in the townland at the time the official valuation record or population census was compiled.
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| 1766 | 1830 | 1864 | 1901 | 1935 | 1957 | 1974 |
| Households &c | Households | Households | Households | Households | Households | |
| Allen Alexander | Anderson John | Anderson John | Caswell John | Caswell James | Caswell James | Adair Sarah |
| Anderson Thomas | Anderson Joseph | Anderson Joseph | Caswell Margaret | Clarke Samuel J. | Caswell James | Bell Rev. J. Brian |
| Arnett Andrew | Anderson Thomas | Austin John | Caswell William | Douglas John | Gray James | Henderson Andrew |
| Aston John | Auston Henry | Barker John | Douglas John | Gordon James | Huggart Willaim | Herron William G. Jun. |
| Barber Thomas | Auston John | Brady Michael | Evans John | Graham Rev. Joseph C. | Hughes Douglas | Huggart Willaim |
| Bell John | Bell John | Caswell James | Gamble Martha | Gray James | Hughes Elizabeth | Hughes Douglas |
| Bell William | Bell Samuel | Caswell John | Gordon Mary | Huggart William | Knight James | Hughes Elizabeth |
| Black David | Blackwood John | Caswell Joseph | Gray John J. | Hughes Douglas | Latimer Thomas | Knight James |
| Boyd David | Carswell James | Conlon James | Jenkins James | Hughes Robert John | Magill John | Magill William |
| Boyd Henry | Carswell John | Crozier Mary | Keating John | Jenkins George | Martin J. | Martin J. |
| Bradshaw James | Clarke John | Evans William | Latimer George | Latimer Thomas | McKie Susan | McMurdie Leando (?) |
| Brown James | Crery Samuel | Gamble John | Lutton Mary | Lutton James | McMurdie Leando (?) | Meaklin ? |
| Brown John | Davis William | Goodfellow George | Lyons John | Lutton William | Meeke Margaret | Mills John |
| Davison James | Gammell Joseph | Gordon James | Magill Alexander | Magill John | Mills Margaret | Mills Samuel |
| Gray John | Gordon James | Harbinson Rev. William | McBirney William | McMurdie James | Mills Samuel | Mills William John |
| Hanna James | Groset Alexr | Huggard James | McKee David | Meek Robert | Pritchard Margaret | Robinson Joseph |
| Hughs Cornelius | Hagan James Jnr | Huggard John | McKeeman David | Mills Margaret | Robinson David | Sheridan James |
| Kelly John | Hagan James Snr | Hughes Cornelius | McMahon Abraham | Mills William | Sheridan James | Smith Samuel |
| Logan D. | Herron Abraham | Hughes Robert | Meek John | Robinson Thomas | Smith Samuel | Smith Thomas |
| McCandless Alexander | Hugart Andw | Jenkins James | Milligan Mary | Sheridan James | Smyth Alexander | Smyth Alexander |
| McComb Alexander | Hugart James | Jenkins John | Mills William | |||
| McCormick John | Hugart Widow | Keating Sleuth | Robb Agnes | Land | Land | Land |
| McCullagh Robert | Hughs Cornelius | Kelly Francis | Robb Alexander | Bell Thomas | Bell Robert | Bell Robert |
| McElroy William | Hughs James | Latimer Thomas Jun | Thompson Anne | Blackwood George | Blackood William James | Bethel Joseph |
| McElwaine John | Hutchison Willm | Latimer Thomas Sen. | Tweed Rev. R.J. | Caswell John | Courtney Sydney | Blackood William James |
| Meek John | Jenkins James | Lockhart David | Henderson Sarah J. | Douglas David | Douglas David | |
| Miller Henry | Jenkins John | Lockhart Samuel | Latimer George | Hadden J.A. | Feeley Samuel | |
| Mulligan Samuel | Johnston Willm | Lutten John | Lyons Reps Samuel | Hadden John A. | Henderson Andrew | |
| Smith John | Kidd Henry | Lutton John | McKee William | Henderson A. | Henderson Andrew & James | |
| Stephenson Samuel | Latimore Thomas | Lyons John | Mills Samuel | Henderson Andrew & James | Knight David | |
| Thomson Sanuel | Lochart John & David | Macmahon John | Mills William Jun. | Knight David | Magill Frederick J. | |
| Tomson John | Loghran Patt | Macquilly Reps. William | Smith Samuel | Magill Willaim | Martin John | |
| Tomson Robert | McCombe Thomas | McFadden David | Thompson Joseph | Martin John | Preston William | |
| Toomany Art | McKee John | McKee William Jun. | McCullagh Charles | |||
| Wyly Alexander | McKee William | McKee William Sen. | Other | Pearson Noble | Other | |
| McMaken James | Meek Adam | Magill John (Shop & Store) | Latimer Thomas (Shop & Store) | |||
| McWillie William | Milligan Reps. James | Other | ||||
| Meek John | Nesbitt Robert | Magill Willaim (Shop & Store) | ||||
| Mulholm James | Robb Alexander | |||||
| Mulligan James | Skinner Anne | |||||
| Mulligan Samuel | Trimble David | |||||
| Rowan Andrew | Trimble Robert | |||||
| Rowan Thomas | ||||||
| Smith Thomas | Land | |||||
| Staret John | Allen John | |||||
| Thompson Hans | Bell Margaret | |||||
| Thompson James | Latimer Archibald | |||||
| Thompson Widow | McKee John | |||||
| Trimble David | Milligan Reps. Samuel | |||||
| Trimble William | ||||||
| Forge | ||||||
| Hanna Edward | ||||||