Dean Purey-Cust

This Shield of Arms can be found near the Minster, note the crossed Keys of St Peter on the left. The design indicates that this building was funded by money raised to celebrate Arthur Purey-Cust serving as Dean of York Minster for 30 years. His wrote several books about York Minster including one entitled 
A Few Words to the Chapter of York by the Dean on the Qualifications, Personal and Professional, of an Ideal Organist for the Minster
I have not read this particular volume so I have no idea if Dean Purey-Cust had a sense of humour or a well developed sense of his own importance!