Woulfe: Ó Súileacháin – O Suleghane, O Soolechan, O Solloghan, O Sullaghan, Sullahan, Sullehan, (Sullivan);...formerly in use in Longford, Cavan and Louth, but now nearly everywhere incorrectly angl. Sullivan.

Fch. bf. Moneyhoolaghan, bar. Ardach (c. 5 mhíle siar ón láthair seo) – OD:AL – Moin Shuilechain, “Sullaghan’s Bog”.

Ó Súileacháin, samplaí den ainm sa chontae: “...the perpetual vicarage of Cnocracha was...unduly occupied by Trinotus Osulechan, a priest of the diocese.” JACAS II, uimh. 10, lch. 21; “...Henry O’Sulecan, chaplain, to the perpetual vicarage of Clongese...” [foinse?]; “Another grange at Ryncole, cont. 2 quarters, is occupied by Thomas Osologhan” IMP, 1540-41; “Gillernewe O Sowllighan...and Moriertagh O Sullaghan, of Ynishemore.” F 3855; “Shane O Solloghan, of Aghekillmore” F 5142; “Oyne O Suleghane, Henry and Teige O Shymeghan [?], Gillernow O Suleghan and Philip O Suleghan,” F 6699; “Breen O Solechan” F 6699;