Blazons & Genealogy Notes1) (Glenmalure, co. Wicklow, of the same race as O’Toole, deriving their surname from Bran, Broin, or Birn, Chief of the Sept. Fiagh Mac Hugh O’Byrne, of Glenmalure, Chief of this great and historic Sept, having been in rebellion, submitted to Queen Elizabeth, 1595. His son, Phelim Mac Fiagh O’Byrne got a re-grant of his lands 1606, and d. 1630). Gu. a chev. betw. three dexter hands couped at the wrist ar. Crest—A mermaid with comb and mirror all ppr.
2) (Timogue, Queen's co., bart., confirmed by St. George, Ulster, 1664, to Daniel Byrne, of Dublin, descended from the O’Byrnes, of co. Wicklow: his eldest son, Sir Gregory Byrne, was created a bart. 1671, and is now represented by George, Lord de Tabley. Sec Leicester, Lord de Tabley).(Cabinteely, co. Dublin; William Richard O'Byrne, Esq., of Cabinteely, M.P. co. Wicklow, is descended from John Byrne, Esq., High Sheriff, co. Wicklow, 1675, younger son of Daniel Byrne, of Dublin, ancestor of Lord de Tabley). Same Arms, with a border of the second for diff. Crest—A mermaid with comb and mirror all ppr. Motlo— Certavi et vici.
3) O’Byrne Brany (Reg. Ped. Ulster’s Office; Shilie, dau. of Louchlin O’Byrne Brant, m. Christopher MacAwley). Ar. a lion ramp. gu. armed and langued az. on a chief or, two dexter hands couped at the wrist of the second.
4) (Timogue, Queen’s County, and Cabinteely, co. Dublin; an Irish sept, in the province of Leinster: Fiach Mac Hugh O’Byrne, chief of the name, temp. Elizabeth, held a high command at the battle of Glendalough, in which the English, under the Lord Deputy Grey, were defeated: the present head of the senior line of the family, the Byrnes of Timogue, is Lord de Tabley: the Byrnes of Cabinteely, the second branch, are represented by William Richard O’Byrne, Esq., of Cabinteely, M.P., co. Wicklow). Gu. a chev. betw. three dexter hands couped at the wrists ar. Crest—A mermaid, in the dexter hand a mirror, in the sinister a comb, all ppr. Motto—Certavi et vici.
5) (Lisnawilly and Rossmakea, co. Louth). Gu. on a chev. betw. three dexter hands couped ar. a mullet az. Crest—A mermaid holding in the dexter hand a mirror, and in the sinister a comb all ppr., and charged with an escallop gu. Motto—Certavi et vici.