LANGLEY-ABBAT'S, (Hertfordshire) 3 m. S. W. of St. Alban's, to whose abbey it once bel. and 4 m. on the N. side of Watford. It was the birthplace of Adrian IV. the only Englishman that was pope of Rome. It being in the crown by the Diss. K. James I. gave it to Fran. Combe, who married the daughter of Tho. Greenhill, but dying without issue, endowed a school here, and devised this manor, &c. to Sidney-Coll. Cambridge, and Trin. Coll. Oxford, for the education of the descendants of his own and his wife's kindred for ever. These colleges afterwards demised it to Tho. and Will. Greenhill by leases; by virtue whereof, they and their heirs were to hold the courts of this manor, and to receive the rents and profits of it. It gives title of baron to Ld. Raymond, who has a seat at Langleybury in the neighbourhood, on the W. side of the r. Gade, which was purchased by the late Ld. his father.