This finely executed Netherlandish roundel of the seventeenth century, now set within the windows of St Mary’s Church, Fawsley, presents St John the Baptist standing beside a kneeling donor beneath a clear, luminous background of pale grisaille. The saint, identified by his camel-skin garment and cross-topped staff, cradles the Agnus Dei, symbol of the Redeemer, while the donor, robed in sombre attire, kneels in devout prayer before him. A scroll unfurls above bearing the words Ecce Agnus Dei, and to the left appears a heraldic shield displaying a golden phoenix on a silver ground, possibly denoting the donor’s family arms.

Executed in delicate brown linework and soft washes of silver stain, the roundel exemplifies the refined miniature style characteristic of post-medieval Dutch and Flemish glass painting. Its careful tonal modelling and economy of colour lend the scene an almost engraving-like clarity. The composition balances devotional intimacy with quiet elegance, the donor’s humility set against the saint’s calm authority.

Such Netherlandish roundels were often produced for private chapels and domestic oratory use, later finding their way into English churches through the antiquarian collecting of the eighteenth and nineteenth centuries. At Fawsley, this piece contributes a note of continental piety within an English Gothic setting, linking local heritage to the broader European tradition of small-scale devotional glass. Modest in size but rich in sentiment and craftsmanship, it stands as a testament to the enduring appeal of the image of John the Baptist as intercessor and herald of divine grace.