Rochester Castle built during Henry III's reign were never repaired; it has been suggested this was because by the 14th century, when considerable sums were being spent on repairs elsewhere in the castle, Rochester had fallen out of favour as a royal residence. As the castle's importance as a high-status residence waned, its role as a barracks and administrative centre came to the fore. The reign of Richard II (1377–1400) saw the investment of £500 in repairing the castle. This was in part in response to French raids on England's southern coast during the Hundred Years' War as England's fortunes in the
English invasion of Scotland (1400) it, in person, to the sitting parliament in November 1399. A.L. Brown has suggested that this indicates the personal interest the King felt in the affair: that this was in fact his own personal plan, and 'that it meant a lot to him, and that it had met with criticism.' He pledged to fulfil this vow before god. At almost the same time, Henry had received a letter from the Scottish king in which Henry was referred to as duke of Lancaster rather than king of England; this, it has been suggested, fuelled his martial enthusiasm towards Scotland. Perhaps even