A prominent and successful merchant stapler, Crowshaw was active in Nottingham affairs from 1371, as a juror, bailiff and collector for the guild of All Saints in St. Mary’s church.
Crowshaw’s ability to secure royal pardons may perhaps be attributed to his employment, from November 1387, as controller of the works at the castle of Nottingham, which was then in Queen Anne’s custody. The queen had also been assigned the lordship of Mansfield and the manor of Linby, and during the next ten years Crowshaw was responsible there for organizing repairs to sewers, mills, houses and weirs.
It was in 1399 that Crowshaw made his own will. In it he left 40 marks towards the fabric of St. Mary’s church, where he was to be buried. He died that same year, before 19 Sept., when Archbishop Scrope commissioned the prior of Newstead to veil his widow.
