O'Mahony (No.3) family genealogy

The following pedigree of the senior branch of this family has been copied from the Genealogical MSS. at Lambeth:

107. Maolmoradh: son of Bran; living in 1014. King of Munster in 965.

108. Cian (2): his son; married Sadhbh, dau. of Brian Boroimhe by his third wife, Gormliath.

109. Mahon: his son; a quo O'Mahony; had two sons—Dermod, and Donogh of Muscry.

110. Dermod; his son.

111. Conor: his son.

112. Dermod: his son; m. a dau. of Donal Caomh MacCarthy Reagh; living in 1311.

113. Donogh, of Iveagh: his son.

114. Conor: his son.

115. Dermod Mór: his son.

116. Finin: his son.

117. Donal; his son.

118. Dermod Ronsaghe: his son; had two sons—Finin; and Maolmoradh.

119. Finin: his son.

120. Donal: his son.

121. Dermod: his son; had four sons:—1. Finin; 2. Conor Kittog of Ardinterran; 3. Donogh Mór of Dunmanus; and 4. Donal of Dunbeacon, whose issue has been extinct.

(122). 1. Finin of Rosbrin, m. a dau. of O'Donoghue Mór, by whom she had Donal, and a dau. m. to Conor MacCormac O'Driscoll.

(123). Donal: son of Finin, (124) Conor: son of Donal, (125) Donal: son of Donal, (126) Teige: son of Donal.

(122). 3. Donogh Mór of Dunmanus, had a son (123) Teige; Teige had a son (124) Donogh; and Donogh had a son (125) Donal.

122. Conor Kittog of Ardinterran: son of Dermod; m. a daughter of O'Dowd, by whom he had issue—1. Conor Fionn; 2. Finin Caol; 3. David; 4. Dermod; and 5. a dau. m. to Owen, son of Maolmuire MacSwiney.

(123). 2. Finin Caol had a son (124) Donal, who had a son (125) Conor.

(123). 3. David had a son (124) Conor, who had a son (125) Finin.

123. Conor Fionn: his son; m. Ellen, base dau. of Donal MacFinin MacCarthy Reagh; d. 1513; had issue—1. Conor Fion Oge; 2. Dermod, d. s. p.; 3. Finin of Crogan; 4. Donal Bhade; and 5. Joanna, who m. twice, first to Conor MacFinin O'Driscoll, and secondly to O'Mahony Dubh of Carbery.

3. (124) Finin of Crogan, who had a son, (125) Donal, living in 1600.

4. (124) Donal Bhade, m. a dau. of O'Mahony of Carbery by whom he had (125) Conor Bhade, who m. twice—first the dau. of O'Mahony of Carbery by whom he had (126) Conor; and secondly to the dau. of Edmond MacSwiney.

124. Connor Fionn Oge: his son; m. Ellen, dau. of O'Mahony of Carbery, by whom he had—1. Conor; 2. Dermod; 3. Maurice; 4. Finin; and 5. a dau. who was Concubine to Sir Eoghan O'Sullivan.

125. Connor, his son; attended the memorable parliament convened by Perrott in Dublin, 1583. From this Conor descended the O'Mahony's Fionn, several of whom served in the army of the English King James II., and in the Irish Brigade in the service of the French King Louis XIV.

The O'Mahonys possessed Hy-Eachach Mumhan, now the barony of Iveagh, in the south-west of the county of Cork; Cineal-mBeice, now the barony of Kinalmeaky; Cineal-Aodh, now the barony of Kinalea; Tiobrad, in the barony of Iveragh, county of Kerry, from the chiefs of this district are descended the O'Mahonys of Dunloe, represented in 1864 by Daniel O'Mahony. The O'Mahony of Castle Quin—Myles, son of Cian, son of Myles, son of Cian—descended from Conor O'Mahony of Kinalmeaky who lost his estates in the Desmond wars, thence he removed to Kerry; and the O'Mahony of Dromore Castle—Denis, son of Richard-John, son of Denis, son of John—from Dermod O'Mahony, who fought and fell on the field of Aughrim on the side of James (Stuart) II., King of England.

We believe the present representatives (1886) of Cian, Prince of Kinalmeaky, are John (Cian) O'Mahony of Clothduff, barony of Muscry, whose brothers are Rev. Michael O'Mahony, C.C., Upper Glanmire, and Rev. Denis O'Mahony, C.C., Nucestown, Enniskean, county Cork. The eldest representative is Jeremiah O'Mahony, of Shanacloyne, parish of Templemartin, and barony of Kinalmeaky, aged 100 years, whose sons are John of Curravordy, and Bartholomew of Shanacloyne, both married and have many children.

Cian, No. 108 above, had his residence in a strongly fortified fort, now called Cathair Mór, in the townland of Gurranes, barony of Kinalmeaky; this fort is nearly entire, of a circular form, and surrounded by three embankments and a deep fosse; there are traces of a second fosse. A few paces to the west of Cathair Mór is another fort called Lios na m-ban or the fort of the women; here the Princess Sadhbh held her court: and to the east and south-east of Cathair Mór, are the remains of other forts of a smaller size, the residence of the military and civil dependants of Cian. Another fortified residence of the O'Mahonys was Grian-na-hunic (now Mossgrove) in Kinalmeaky, which was dismantled some few years ago for materials to erect a farm house and offices, by a farmer named Desmond. Tradition relates this fortification and surrounding country to have been possessed by a Colonel, Donal O'Mahony, a remote ancestor of the O'Mahonys of Clothduff and Shanacloyne. There are ample grounds to show that this family possessed nearly all the country occupied at a later date by the MacCarthys Reagh, Glas, Duna, and part of Muscry, together with that taken by the O'Sullivans.

The O'Mahonys had castles at Rathlin (now Lord Bandon's castle); Ardinterran (now Ardintenant); Ringmahon; Dunbeacon; Dunmanus; Rosbrin; Blackcastle (Schull); Ballydevlin (Kilmore); Dromdeely (county Limerick); and Ballymodan (East Carbery).

The last Prince of Rathlin was Connor O'Mahony of Kinalmeaky, who at the age of 23 years fought and fell on the National side in the Desmond wars: he left issue, who are now, mostly farmers on the soil of their ancestors.