East Window, St. Mary's Lydiard Tregoze, by Abraham Van Linge, seventeenth century

The East Window of St. Mary's was commissioned by Sir John St.John (1585-1648), 1st Bart, in memory of his uncle and benefactor Oliver, 1st Visct Grandison, who died in 1630. 

Unlike the largely secular Polyptych, this memorial contains religious references in the depictions of St. John the Baptist and St. John the Evangelist; though the choice of saint clearly reflects the family name. The olive tree (Oliver was a popular name for the family's eldest sons) in the central light traces the descent of the manor of Lydiard Tregoze to Sir John St.John, through several families that had held it.

The window was created by the master glass painter Abraham Van Linge, the greatest glass painter in England in the first half of the seventeenth century.

Van Linge was also commissioned by Sir John to create the East Window in St. Mary's Church Battersea, and an extraordinary secular window in Lydiard House.