The north window in the sanctuary is unique as it combines tracery and sculpture with stained glass in a single theme. It shows the ascent of Christ from Jesse. The tree with five undulating branches carved in foliage rises from the sculptured recumbent form of Jesse. Much of the 14th-century glass is fragmentary, but still in its original tracery. The figures of Christ and the Virgin and Child with other figures are intact. The glass contains figures from a Tree of Jesse and additional figures are carved on stone mullions.