Irish formde Léis (Woulfe's Irish form of the Norman name); Ó Laitheasa / Ó Laithgheasa, an old Wexford name also anglicised Lacy, which Woulfe says is 'to be distinguished from the Norman de Lacy'
Meaningde Léis: Norman 'de Laci', of Lacy or Lassy (France). Ó Laitheasa / Ó Laithgheasa: 'descendant of Flaitheas' or 'Flaithgheas'
CountiesMeath, Limerick, Wexford
Other spellings2
Origin of the Lacy name
Woulfe (de Léis): Norman 'de Laci'; 'the de Lacys came over to England with William the Conqueror'; 'Hugh de Lacy was granted the whole of the province of Meath' at the Anglo-Norman invasion; 'a highly distinguished branch... settled in Co. Limerick where they had castles at Ballingarry, Bruree, Bruff, etc.' Woulfe's other entry, Ó Laitheasa / Ó Laithgheasa, is 'the name of an old Wexford family, still numerous in that county... To be distinguished from the Norman de Lacy.'[1][2]
- 1172Four Masters: Tiernan O'Rourke 'treacherously slain at Tlachtgha by Hugo de Lacy' and Donnell, son of Annadh O'Rourke.[5]
- 1186Four Masters: 'Gilla-gan-inathar O'Meyey' severed the head of Hugo de Lacy, 'the profaner and destroyer of many churches', at the castle of Durrow.[6][3]
- 1209Four Masters: the King of England 'banished Walter de Lacy to England' and 'also banished Hugo de Lacy to England'.[7]
- 1241Four Masters: 'Walter de Lacy, Lord of the English of Meath, and head of the council of the English of Ireland, died in England.'[8]
- 1601Four Masters: Pierce De Lacy sent to Ulster to seek aid for James, 'who had been styled Earl of Desmond by the Irish'.[9]
- 1678Peter Lacy (later Count, Field-Marshal) born at Killeedy, Co. Limerick.[10]
- 1751Count Peter Lacy died in Livonia, aged 72.[10]
Lacy surname: questions
Is Lacy an Irish or a Norman surname?
Woulfe gives two origins. His entry de Léis is 'Norman de Laci, i.e., of Lacy or Lassy in France'. His other entry, Ó Laitheasa / Ó Laithgheasa, is 'the name of an old Wexford family, still numerous in that county', and he says it is 'to be distinguished from the Norman de Lacy.' No source opened here says which is the commoner origin today — there is no Matheson 1890 births page for Lacy.[1][2]
Did everyone named Lacy descend from Hugh de Lacy?
No. Woulfe gives two origins — the Norman de Lacys and the Wexford Ó Laitheasa / Ó Laithgheasa family, which he says is 'to be distinguished from the Norman de Lacy'. Among the Normans themselves the Four Masters name 'Walter de Lacy, Lord of the English of Meath' and 'Hugo de Lacy, Earl of Ulster', while Woulfe records 'a highly distinguished branch' in Co. Limerick.[1][2][5][6][7][8]
What happened to Hugh de Lacy, who was granted Meath?
The Four Masters record that after finishing the castle of Durrow he went to view it, and that 'one of the men of Teffia, a youth named Gilla-gan-inathar O'Meyey... drawing out an axe, which he had kept concealed, he, with one blow of it, severed his head from his body'; they call him 'the profaner and destroyer of many churches'. Woulfe adds: 'It was an Ó Miadhaigh that terminated the career of Sir Hugh de Lacy.'[6][3]
Who was Count Peter Lacy?
A Field-Marshal in Russian service, born at Killeedy, Co. Limerick, in 1678; he rose from ensign under Sarsfield to Governor of Livonia and died in 1751.[10]