The grant of the dukedom of Guienne to Gaunt was specifically "for life", yet C.Ch.R. iv. 318, dated 16 February, 1390, provided by charter the continuance for his heirs of the liberties granted to him personally. Does this mean that, in addition to the seizure of the Lancastrian estates, Richard II was also re-seizing the dukedom of Aquitaine in his ill-fated move to seize Gaunt's estates after the magnate's death? Or had the dukedom reverted to the crown upon the duke's death?