- Author: Colonel Sir Harry Mackworth Author Record # 166246
- Legal Name: Mackworth, Harry Llewellyn, 8th Baronet Mackworth of the Gnoll, Glamorgan
- Birthplace: Dixton, Monmouthshire, Wales, UK
- Birthdate: 17 March 1878
- Deathdate: 18 November 1952
- Language: English
- Webpages: records.ancestry.com, thepeerage.com