The astronomer William Herschel (1738–1822), and his sister Caroline, produced the first true map of the universe with a long, 49 inch reflecting telescope he built in his garden in Windsor Road, Slough. A monument in Windsor Road commemorates his achievement. William married and is buried in Church of St Laurence, Upton-cum-Chalvey. It is believed that Joseph Haydn visited Slough and met Herschel during his time there. According to one account, Haydn asked the esteemed astronomer for his opinion on the Biblical story of the seven days of Creation. Herschel's answer is unknown, but - so the story goes - Haydn went back to his lodgings and began to compose his famous oratorio "The Creation".