The 1609 Baronial Map depicts the townland as part of the four polls of BMcGoagh. In the Plantation of Ulster by grant dated 13 March 1610, King James VI and I granted four polls of Ballemagoechan to Cahell M'Owen O Reyly. The four polls consisted of 1 in Bealaghlyan, 2 in Acoylagh and 1 in Cronarry, totalling 200 acres. The said Cathal O'Reilly was the nephew of two chiefs of the O'Reilly clan- Aodh Connallach mac Maolmhordha who was chief from 1565–1583 and Eamonn mac Maolmhordha who was chief from 1596–1601. He was also a brother of Cathaoir O'Reilly who received lands in Kildoagh townland and first cousin of Donill Backagh McShane O'Reyly who was simultaneously granted lands in Burren. An Inquisition of King Charles I of England held in Cavan Town on 31 March 1635 stated that Cahell O Reily was seized in his lifetime of, inter alia, one poll of Bealaghlynan. He died 1 January 1634 and his son Hugh O'Reily had reached his majority and was married. The O'Reilly lands in Bellaleenan were confiscated in the Cromwellian Act for the Settlement of Ireland 1652 and were distributed as follows- In the Hearth Money Rolls compiled on 29 September 1663 there was one person paying the Hearth Tax in Ballylenan- Phelemy McKelagher The 1652 Commonwealth Survey lists the townland as belonging to Lieutenant-Colonel Tristam Beresford and a further confirming grant dated 3 November 1666 was made by King Charles II of England to the aforementioned Sir Tristram Beresford, 1st Baronet which included, inter alia, 96 acres-2 roods-32 perches of land in Gortnegloigh or Gorteengloigh alias Ballymagough or Ballynegough. By grant dated 11 September 1670 from King Charles II of England to said Sir Tristram Beresford, the said lands of Gortnegleigh or Ballymagough were included in the creation of a new Manor of Beresford. The 1790 Cavan Carvaghs list spells the townland name as Bellalinan. Lowther Kirkwood of Mullinagrave, parish of Templeport, Co. Cavan, gentleman made the following will- The Tithe Applotment Books for 1827 list eighteen tithepayers in the townland. The Bellaleenan Valuation Office Field books are available for October 1839. Griffith's Valuation of 1857 lists thirteen landholders in the townland. On 6 July 1857 the Incumbered Estates Commission published the following notice
In the Matter of the Estate of James Brien, Geo. Brien, Edward Brien and Francis Brien, Owners. Exparte by Isabella Crummer, Petitioner. The commissioners having ordered a Sale of the Lands of Shanadaragh and Curnagunlogh, Cullegh, Drumlohgher, Drumledin, Sananaragh, and Drumledin, and Corlough, situate in the Barony of Tullyhaw, and County of Cavan, held under lease dated the 10th April, 1718, from the Bishop Raphoe, for lives renewable for ever, and which Lands are included in the denominations of Ballymagord, Owngally, Gortneglough, Drumedin or 'Ballylennin, in said lease mentioned:
The only structure of historical interest in the townland seems to be Saint Patrick's Well, where a pattern was held on the first Sunday in July up to the 1950s, to mark the festival of Lughnasadh.
