library; and 500 Additional Manuscripts that he had collected from various sources. The majority of the manuscripts were acquired between 1894 and 1905 as part of the campaign to establish the National Library in Aberystwyth. In 1905, after it had been confirmed that Aberystwyth would be the Library's location, he almost entirely ceased to collect manuscripts. Over 25,000 printed volumes were either donated to the National Library by Sir John in his lifetime or bequeathed on his death. The 193 books and pamphlets that he purchased from Shirburn Castle are considered the most valuable group in the collection as they include important examples of the earliest Welsh printed literature. Another important part of the collection comprises editions of Arthurian romance, including a single incunabulum, Lancelot du Lac (1488), and a copy of all the Kelmscott Press publications. There is much Welsh interest material, including significant items that Sir John acquired individually, collections that he bought intact, such as the 4,558 volume library of John Parry of Llanarmon-yn-Iâl, and portions of libraries, such as those of Reverend John Jenkins of Kerry and Reverend Robert Williams of Rhydycroesau. There is therefore some duplication of early Welsh books, and the collection is often rich in variants of the same edition. Sir John also collected pictorial records of Welsh life and culture, via his network of contacts in the art trade, which provided a solid foundation for the National Library's collections of maps and art. This includes a set of S. H. Grimm's prints and drawings of Wales, plates of Samuel and Nathaniel Buck's views of Wales, drawings by Sir Edwin Landseer, aquatints by Paul Sandby, and Thomas Rowlandson's drawings of his 1796 tour of Wales. There are also pictures attributed to masters such as Van Dyck, Gainsborough and Turner. Personal life Williams married Mary Hughes in 1872. There were no children of the marriage. Jack the Ripper accusation Sir John was accused of the Ripper crimes in a 2005 book, Uncle Jack, written by one of his distant relatives, Tony (Michael Anthony) Williams, and co-authored by Humphrey Price. The authors assert that the victims knew the doctor personally, and that they were killed and mutilated in an attempt to research the causes of infertility. The book also asserts that a badly blunted surgical knife, which belonged to Sir John, was the murder weapon. Serious doubts were raised by others about the authors' competence