General Notes

When Robert de Lacy dsp in 1193, his half sister, Albreda Lisours (the dau. of his mother, Albrida, by her 2nd husband, Eudo de Lisours), then the wife of Richard Fitz-Eustace, feudal baron of Halton, and constable of Chester, possessed herself of the Barony of Pontefract, and all the other lands of her deceased brother, under pretence of a grant from Henry de Lacy, her 1st husband. By Fitz-Eustace, she had a son, John, who becoming heir to his half uncle, Robert de Lacy, assumed that surname and inherited, as John de Lacy, the Baronies of Halton and Pontefract. [Sir Bernard Burke, Dormant, Abeyant, Forfeited, and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 310, Lacy, Earls of Lincoln]

The eldest son and heir of his father, Richard Fitz-Eustace, John also became heir to his half uncle, Robert de Lacy, assumed that surname and inherited, as John de Lacy, the Baronies of Halton and Pontefract, with the Constableship of Chester. This feudal chief, who was Lord of Flambro, Baron of Halton, and Constable of Chester, had two sons, Roger, Constable of Chester, and Robert. [John Burke, Commoners of Great Britain and Ireland, Vol. I, R. Bentley, London, 1834-1838, p. 548, Constable, of Wassand]

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The surname of Constable was assumed from the office of Constable of Chester, one of the high dignities constituted by Hugh Lupus, and held by this family soon after the Norman Conquest. Robert de Lacy, younger brother of Roger, Constable of Chester, and Baron of Halton, enjoyed the lordship of Flamburgh, by gift of that nobleman, and was s. by his son, Robert Constable. [John Burke, Esq. and John Bernard Burke, Esq., Extinct and Dormant Baronetcies of England, Ireland, and Scotland, 2nd Edition, Scott, Webster, and Geary, London, 1841, p. 124-5, Constable, of Everingham]

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Richard Fitz-Eustace, Baron of Halton, and constable of Chester, m. Albreda, dau. and heir of Robert de Lizures, and half-sister of Robert de Lacy, and had issue, John, who assumed the surname of Lacy, and s. his father as constable of Chester. [Sir Bernard Burke, Dormant and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 121, Clavering, Barons Clavering]