File:Stamford, St Martin's church East window (30453869280).jpg

This five light window was assembled by Peckitt in the 18th century, and incorporates some original glass from St Martin's and some from Tattershall church. The original glass dates from the second half of the 15th century. Peckitt inserted the geometrical designs.

The tracery of this window depicts the Annunciation in the centre, with many different Shields including one for Richard Fleming Bishop of Lincoln 1421-31. At the top of the left light is a shield for John Chedworth, Bishop of Lincoln 1452 to 1471, also on the right-hand light for John Russell Bishop of Lincoln 1480 to 1494. At the top of each main light there are four Demi Angels either side of the Royal coat of arms in garter, beneath which there are four mitred Saints (one an Archbishop)surrounding a figure of God enthroned. At the bottom of the left-hand and right-hand light are 16th century Shields including those of Bertie, Irby, Copeldyke and Bilsby. The bottom row has the arms of Sheffield, St George crowned in a garter, the shield of Cecil, shield of Russell and that of Borough.