 Windsor was not initially used as a royal residence; the early Norman kings preferred to use the former palace of Edward the Confessor in the village of Old Windsor. The first king to use Windsor Castle as a residence was Henry I, who celebrated Whitsuntide at the castle in 1110 during a period of heightened insecurity. Henry's marriage to Adela, the daughter of Godfrey of Louvain, took place in the castle in 1121. During this period the keep suffered a substantial collapse – archaeological evidence shows that the southern side of the motte subsided by over 6 ft (2 m). Timber piles were driven in to support the motte and the old wooden keep was replaced with a new stone shell keep, with a probable gateway to the north-east and a new stone well. A chemise, or low protective wall, was subsequently added to the keep.
