William Ralph Cartwright (1771-1847) inherited Aynhoe in 1772 when he was just one year old. In 1794 he married Emma Mary Maud daughter of Viscount Hawarden and they had sons Thomas and William. Cartwright was elected Member of Parliament for Northamptonshire 1797-1831, and for South Northamptonshire 1832-1846. He died in 1847.
Soane's most visible work at Aynhoe, other than the triumphal arches, was the addition of another floor to the south or garden front above the library. For the sake of symmetry, the orangery (labelled greenhouse in Soane's drawings) was made double-height. Internally the new work was mostly in the south west part of the house. The brief was to provide a new library, garden entrance hall ('anti room'), eating room, a room for the housekeeper, and some new offices. Soane also achieved what Ptolemy Dean ('Sir John Soane and the country estate', 1999, p.84) called his 'finest axial enfilade' in which the 'six rooms from the orangery to the library were reconfigured with large centrally placed double doors designed to create a noble succession of spaces'. This was an early decision evident in drawings [9+8 verso] and  dated 2 and 5 of November1799.
The drawings are catalogued (as far as possible) by date beginning with Soane's own rough sketch designs made when he visited Aynhoe from 2nd to 4th of November 1799. Then follow designs made from 5th to 19th of November 1799. After this are designs (some in Soane's hand) dated January, April, May, June and December 1800. Last are four drawings dated January and March 1801 and July 1802.
Sir John Soane's collection includes some 30,000 architectural, design and topographical drawings which is a very important resource for scholars worldwide. His was the first architect’s collection to attempt to preserve the best in design for the architectural profession in the future, and it did so by assembling as exemplars surviving drawings by great Renaissance masters and by the leading architects in Britain in the 17th and 18th centuries and his near contemporaries such as Sir William Chambers, Robert Adam and George Dance the Younger. These drawings sit side by side with 9,000 drawings in Soane’s own hand or those of the pupils in his office, covering his early work as a student, his time in Italy and the drawings produced in the course of his architectural practice from 1780 until the 1830s.
Browse (via the vertical menu to the left) and search results for Drawings include a mixture of Concise catalogue records – drawn from an outline list of the collection – and fuller records where drawings have been catalogued in more detail (an ongoing process).