IERBY, (Cumberland) in the p. of Torpenho, and on the N. E. side of Cockermouth, near the source of the Eln, 225 cm. 290 mm. from London, consists of 2 manors, the High and the Low; the latter whereof is often called Market-Ierby, by reason of its Mr. on Th. which the other has not. The High-Ierby was a long time in the possession of a family of that name. The latter was lately the Lp. of the Musgraves of Crokedale, who are descended of the same family.