Summary of major sales
- Gregory Heirlooms. Christie's, London. June, 17, 1878. 172 lots producing a total of around £15,180
- Gregory Heirlooms by order of Sir Charles G. E. Welby. Christie's, London. June 27, 1900. 60 lots producing around £11,000
- Harlaxton Manor and Contents Sale. June, 1937. Thomas Sherwin Pearson Gregory. Manor sold to Mrs Violet Van der Elst.
- Grantham Castle Contents Sale, June 1948. Mrs Van der Elst. Manor sold to The Society of Jesuits.