Knights of Tewkesbury 2 The south west window in the chancel contains images of four knights who were important descendants of the Abbey's founder Robert Fitzhamon.1 1. Hollister, Warren C Henry I Yale English Monarchs Series Yale English Monarchs Series New Haven, London Yale University Press 2001. pp58-59. TagsGloucestershireMedievalGothicStained Glass ‹ Robert Fitzroy, 1st Earl of Gloucester up Richard de Clare, 6th Earl of Gloucester › Français