Dormant, Abeyant, Forfeited, and Extinct Peerages @ p. 279, Holand, Barons Holand
The cited information was published by Burke's Peerage, Ltd., London, England, 1883, held in
{R500171218} (Ref: p. 279, Holand, Barons Holand) The author/originator was Sir Bernard Burke.