This window depicts Christ's ascension into heaven, witnessed by the Virgin Mary and disciples. Since the Gospels do not mention who was present at this important event, the presence of the Virgin Mary indicates her importance in the Christian faith. It originally formed part of the east window of the Church of St Peter the Great, Worcester. The artist John Richard Clayton (1827–1913) trained as an architectural draughtsman and began designing stained glass in 1853. He was also a sculptor and illustrator. In 1855, he and his partner Alfred Bell (1832–1895), founded the firm of Clayton and Bell, which become one of the most successful and prolific of the Victorian period. This panel, with its bright, clear colours, fluent draughtsmanship and bold leading, is typical of the firm's best early work.