Essex, England, originally from the Manor of Glascott, Warwickshire, Har. MSS., allowed at the Herald's Visitation to Essex, 1614, as the arms of John Glascock, Esq., of Highestre, Essex, eldest son of John Glascock of, eighth in descent from John Glascote of Glascoke, Esq., living 38th regnal year of Henry III., A.D. 1253. Also Duary, and Ballyroan, in the Queens’ county, Music Hall, Kilbride, Dublin, and the city of Dublin, Ireland; descended from Downe Hall.
Arms: Ermine, a chevron between three cocks azure, armed, crested, and jelloped or.
Crest: A cock azure, armed, rested and jelloped or, holding in the beak an annulet gules.
Motto: Vigil et audax.