The Ferrier Window (Te Deum or Prayer and Praise Window) , was given by Charles P. Ferrier in memory of his wife, Nancy Quirk Ferrier (1850-1928), daughter of Daniel Lace Quirk and mother of Gertrude Ferrier (1854-1947). The eight medallions of the window depict:

• Incense, a symbol of prayer
• Praying hands
• Petitions
• Music
• Candle in stand
• A scroll with the words of the Sanctus (Sanctus, sanctus, Dominus Deus . . . Holy, holy, Lord God of Hosts)
• A prie dieu, or prayer-desk
• An adoring angel