William Wailes

According to the 2017 Quinquennial report one of the windows in St. Mary's is attributable to William Wailes.

As the Quinquennial report is the only place that I have seen this stated I cannot confirm that this is the case.

Comparing the examples of Wailes' work from the Wikipedia page.

According to the Wikipedia page

Wailes was born and grew up in Newcastle on Tyne, England's centre of domestic glass and bottle manufacturing. His first business was as a grocer and tea merchant.[1] However, his artistic talent and practical skills led him to set up a small kiln in the backyard of his premises. He made and fired small decorative enamels which were sold in his shop.