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| Catholic Parish | Map Grid | RC Parish: | Diocese | Earliest Records | Parish Address |
| Ardcarn | 4 | Ardcarn (Cootehall) | EL | b 3.1843 m 3.1843 missing 6.1860-4.1861 | Cootehall, Boyle, Co. Roscommon |
| Athleque | 44 | Atheleaque and Fuerty | EL | b 1.808 m 7.1808 d 1.1807 missing dates 5.1828-8.1834, 7.1864-1.1865, m2.1834-3.1836-d. ends 1837 | Athleaque, Co. Roscommon |
| Aughrim | 19 | Aughrim (se also Kilmore) | EL | b. 8.1816, m. 8.1816 missing dates: b 12.1837-1.1865, m 12.1837-1.1865 | Hillstreet, Carrick-on-Shannon, Co. Roscommon |
| Ballintober | 18 | Ballintober | EL | b12.1831, m 7.1831 | Ballintuber, Castlereas, Co. Roscommon |
| Ballynakill | 35 | Ballynakill (Ballymore) Co. Galway | EL | ||
| Baslick | 16 | see Ogulla | EL | ||
| Boyle | 2 | Boyle | EL | b 9.1827, m 9.1828, d 7.1828 missing m 6.1846-10.1864, d end 11.1864 | |
| Bumlin | 26 | see Lissonuffy | EL | ||
| Cam or Camma | 51 | see Kiltoom | EL | ||
| Castlemore | 9b | Castlemore and Klcolman | AC | b 11.1851, m. 8.1830 missing m 10.1867-2.1868 | The Presbytery, Ballaghadereen, Co. Roscommon |
| Clooncraff | 21 | Kiltrustan, etc., see Lissonuffy | EL | ||
| Cloonfinlough | 28 | Lissonuffy, see Lissonuffy | EL | ||
| Cloontuskert | 40 | Cloontuskert | EL | b 1.1865 m 2.1865 | Kilrooskey, Roscommon |
| Cloonygormican | 34 | Glinsk, See Ballynakill (Ballymore Co., Galway) | EL | ||
| Creagh | 57 | see Kilcloony, Co. Galway | CF | ||
| Creeve | 13 | Creeve, Seep Olphin | |||
| Drum | 56 | See St. Peter's (Athlone) | TU | ||
| Drumatemple | 33 | See Ballintober | EL | ||
| Dunamon | 37 | Kilbegnet, See Ballynakill (Ballymoe), Co. Galway | EL | ||
| Dysart | 53 | Dysart and Tissara | EL | B 7.1850 (2 REGISTERS) M 12.1862, D 12.1862 | Ballforan, Ballinasloe, Co. Galway |
| Elphin | 22 | Elphin and Creeve | EL | B 6.1807, M 5.1807, MISSING DATES B 12.1808-5.1810, 7-1860-1.1866, M 10.1830-3.1864 | Elphin, Co. Roscommon |
| Eastersnow | 6 | Part Killukin (1) part Kilnamanagh | EL | ||
| Fuerty | 43 | see Atheleaque | EL | ||
| Kilbride | 38 | Kilbride | EL | b 7.1835 m 9.1838, missing dates b 9.1849-4-1868 m ends 1846 | Fourmilehouse, Roscommon |
| Kilbryan | 3 | see Boyle | EL | ||
| Kilcolagh | 11 | see Killukin (1) | EL | ||
| Kilcolman | 9a | see Castlemore | AC | ||
| Kilcooly | 25 | see Ogulla | EL | ||
| Kilcorkey | 14 | Kilcorkey and Frenchpark | EL | b 1.1865 | French Park, Castlereas, Co. Roscommon |
| Kilgefin | 39 | see Cloontuskert, etc. | EL | ||
| Kilglass | 31 | Kilglass and Rooskey | EL | b 10.1865 | Kilglass, Co. Roscommon |
| Kilkeevan | 15 | Kilkeevan | EL | b 11.1804, m 11.1804, d 2.1805 missing dates b 5.1809-1.1816, 8.1819-1/1826, m 7.1809-1.1816, 4.1820-10.1838, d 5.1809-1.1816, 10.1819-1.1852 end 1855 | Castlerea, Co. Roscommon |
| Killinvoy | 46 | See St. John's | EL | ||
| Killukin (1) | 77 | Killukin and Killumod | EL | b 6.1811, m 4.1825, d 10.1820 missing dates d. ends 3.1826 | Croghan, Boyle, Co. Roscommon |
| Killukin (2) | 27 | Part Ogulla, Part Cloonfinlough, see Lisonuffy | EL | ||
| Killumod | 8 | Killumod, See Killukin (1) | EL | ||
| Kilmacumsy | 12 | see Elphin | EL | ||
| Kilmeane | 45 | see St. John's | EL | ||
| Kilmore | 30 | Kilmore | EL | b 2.1825, m 2.1825 missing dates b 2.1860-1.1865, m 11.1859-2.1865 | See Aughrim |
| Kilnamanagh | 9 | Kilnamanagh (Breedogue and Ballinameen) | EL | b 11.1859, m. 2.1860 | |
| Kilronan | 1 | Kilronan(Keadue, Aigna, and Ballyfarnon) | TU | b l.1824, m 10.1823, d 6.1835, missing dates b 7.1829-1.1835, m 6.1829-1.1835 | Keadue, Boyle, Co. Roscommon. |
| Kilteevan | 42 | see Roscommon | EL | ||
| Kiltoom | 52 | Kiltoom (Ballybay) | EL | b 10.1835, m 10.1835, d 7.1837 missing dates b 5.1845-4.1848 m 7-1846-1.1848, d 3.1845-1.1857, ends 1865 | Kiltoom, Athlone, Co. Roscommon |
| Kiltrustan | 23 | see Lissonuffy | EL | ||
| Kiltullagh | 17 | Kiltullagh | TU | b 9.1839, m 8.1839 missing dates m 4.1874-1.1877 | Ballinlough, Co. Roscommon |
| Lissonuffy | 29 | Kiltrustan, Lissonuffy, and Cloonfinlough (Strokestown) | EL | b 10.1830 several different registers m10.1830 | Strokestown, Co. Roscommon |
| Moore | 58 | Moore | TU | b 9.1876, m 1.1877 | Ballydangan, Athlone, Co. Roscommon |
| Ogulla | 24 | Ogulla and Baslic (Tulsk) | EL | b 18.1865, m1.1864 | Tulsk, Castlerea, Co. Roscommon |
| Oran | 36 | Oran (Cloverhill) | EL | b 1.1845, m 1.1845 | Cams, Roscommon |
| Rahara or Raharrow | 48 | see St. John's | EL | ||
| Roscommon | 41 | Roscommon and Kilteevan | EL | b. 10.1837, m 1.1820 | Parochial House, Roscommon, Co. Roscommon |
| St. John's or Ivernoon | 49 | St. John's | EL | b 7.1841 several different registers m 7.1841, d. 1854 | |
| St. Peter's | 55 | St. Peter's Athlone | EL | b 1.1789, m1.1789, d 1.1789 | St. John's Lecarrow, Roscommon |
| Shankill | 20 | See Elphin | EL | ||
| Taghboy | 50 | See Dysart | EL | ||
| Taghmacconnell | 54 | Taghmaconnell | CF | b 7.1842, m 1.1863 | |
| Termonbarry | 32 | Rooskey, See Kilglass | EL | ||
| Tibohine (1) | 10 | Tibohine, also Loughglynn see below, also part Frenchpark, se Kilcorkey | EL | b 1.1833, m 1.1833, missing dates b 9.1864-5.1875, m 6.1864-2.1865 | |
| Tibohine (2) | 10 | Loughglynn and Lisacul | EL | 3.1817, 4.1817, d 1.1850 | |
| Tisrara | 47 | See Dysart | EL | ||
| Tumna | 5 | part Killukin (1) also part Ardcarne | EL |