From Book Owners Online
Landowner, politician, administrator.
Developed the library at Lanhydrock House, Cornwall with Richard Robartes.
- Duffin, Anne. "Robartes, John, first earl of Radnor (1606–1685), politician and army officer." Oxford Dictionary of National Biography.
- Barker, N. Treasures from the libraries of National T rust country houses, New York, 1999, no 45.
- Keep, D. Works by Zurich reformers in the library at Lanhydrock, National Trust Yearbook 1976-7, 73-80.
- Purcell, M. The library at Lanhydrock, The Book Collector 54 (2005), 195-230.