Dormant, Abeyant, Forfeited, and Extinct Peerages @ p. 27, Basset, Barons Basset of Sapcote
The cited information was published by Burke's Peerage, Ltd., London, England, 1883, held in
{R500171144} (Ref: p. 27, Basset, Barons Basset of Sapcote) The author/originator was Sir Bernard Burke.