Robert Layton, occurs 1421 Thomas Lockington – Prior from 1421 to 1447 (given in "The typescript List of Obiits of the Carthusians of the English Houses") ("The Houses of Carthusian Monks..." shows "Thomas, occurs 1428" and "Thomas Lockington, occurs 1436, 1437, 1439" as separate entries.)
Robert Layton, im Jahre 1421 Thomas Lockington – Prior 1421–1447 (aus The typescript List of Obiits of the Carthusians of the English Houses (The Houses of Carthusian Monks... schreibt „Thomas, occurs 1428“ und „Thomas Lockington, occurs 1436, 1437, 1439“ als separate Einträge.))