The name Rosamund (also spelt Rosamond and Rosamunde) is a girls' name and can also be a family name (surname).
On her mother's death Lady Katherine's elder sister, Lady Rosamund Agnes (1914–2003) became the 11th Countess of Dysart, but never married or had issue, on her death in December 2003 Lady Katherine succeeded to the titles of Countess of Dysart and Lady Huntingtower.
Rosamund Abigail Hanson (born 24 September 1989) is an English film and television actress who played the role of Michelle ("Smell") in 2006 film This Is England and its 2010 and 2011 television sequels This Is England '86, This Is England '88 respectively.
Lady Sackville, Vita's mother, invited Rosamund to visit the family at their villa in Monte Carlo; Rosamund also stayed with Vita at Knole, at Rue Lafitte, and at Sluie.