 Hargrove died at Knaresborough on 5 December 1818, and was buried in the churchyard there.In 1769, according to William Boyne in the "Yorkshire Library", there appeared anonymously the first edition of Hargrove's "History of the Castle, Town, and Forest of Knaresborough, with Harrogate and its Medicinal Waters", which was frequently republished, later with the compiler's name on the title-page.The York edition of 1789 had plates and woodcuts by Thomas Bewick.