Euphemia de Walliers (1100s – 26 April 1257) was a Benedictine nun of Flemish descent who became the abbess of Wherwell Abbey.
Euphemia built a new farmery, dorter and latrines with running water, all away from the main buildings, and nearby a chapel of the Blessed Virgin, with a large enclosed garden.
She cleared older buildings and built a new hall for the manor court, and further away a new efficient mill.
When the decaying bell tower collapsed on to the dorter in the early hours, narrowly missing the nuns, she built a tall and handsome replacement that matched the remaining buildings and in her old age she had dismantled and rebuilt with 12-foot deep foundations the sanctuary of the church.
[3] de Walliers had added details of her relatives' obituaries and prayers to the psalter given to her by her predecessor, Matilda.