Castlederg Poor Law Union covered the parishes of URNEY (part), Termonamongan (all), ARDSTRAW (part), LONGFIELD WEST (all); the workhouse being located in Castlederg.
GUARDIANS OF CASTLEDERG UNION
For Year ending 25th March, 1864
| DIVISION | GUARDIAN | RESIDENCE |
| Bomackatall | Mr. William GAMBLE | Drumgallon |
| Castlebane | Mr. David JOHNSTON | Castlederg |
| Castlederg | Mr. Robert McCAY | Castlederg |
| Clare | Mr. John FORBES | Castlederg |
| Clunahill | Mr. William PATTERSON | Coolnananagh [Coolcrunaght?] |
| Corgary | Mr. John HARPER | Aughearan |
| Drumquin | Mr. John GIVEN | Drumlegagh |
| Killen | Mr. John JOHNSTON | Edenreagh |
| Killeter | Mr. Neal BROWN | Killeter |
| Lisnacloon | Mr. James KNOX | Kilehan |
| Listymore | Mr. David PORTER | Erginagh |
| Magheracrigan | Mr. Andrew Thomas LOVE | Magheracrigan |
| Maghernageeragh | Mr. Samuel CALDWELL | Maghernageeragh |
| Maghernageeragh | Mr. Wm. HENDERSON | Maghernageeragh |
| West Longfield | Mr. William ROBB | Ardrawer |
Chairman – William KNOX, Esq.
Vice-Chairman – Joseph SCOTT, Esq.
Deputy Vice-Chairman – Thomas SPROULE, Esq.
Clerk – Edward HEMPHILL
Treasurer – Thomas LYLE, Esq., Ulster Bank