John Roysse refounded the School in 1563 as the Free School of the Holy Trinity. On Trinity Sunday, 7 June 1903, this Chapel was dedicated to the Holy and Undivided Trinity by the Right Reverend John Mitchinson (formerly Bishop of Barbados), Master of Pembroke College, Oxford and Chairman of the School Governors.
On 7 October 2004, the Right Reverend Richard Harries, Bishop of Oxford, dedicated to the Trinity a new east window by the artist Nicholas Mynheer and, made by Mary Barton, a set of altar frontal, burse and veil (both used for Holy Communion) and lectern fall, all bearing symbols of the Trinity in colour and shape.
Nicholas Mynheer aimed “to produce a window that is striking both in its design and intensity of colour”. He writes:
The design is based on the Holy Trinity, the dedication of the Chapel. Christ is central to the design; he looks at us, engaging us, and says to each and every boy, “You are my beloved Son” (Matthew 3:17). The hands of Christ are raised to show us the wounds of the crucifixion but they are also raised in the triumph of the Resurrection.
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| The left hand panel depicts Abraham entertaining the three angels (Genesis 18), the theme known as“The Old Testament Trinity”. | The Holy Spirit is represented by the dove above Christ. The feathers have been transfigured into Pentecostal flames which spread out across the windows. | The right hand panel depicts a tree under which lies a town. The tree is a symbol for Christ, protecting mankind beneath. The light of Christ shines through Man and out to the world. |
God the Father is represented by the whole of creation; in the tree, the landscape, the moon and the very glass itself, as well at the light which comes through it.
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| Detail of Abraham's hospitality to the Three Angels interpreted as eucharistic bread and wine |
