Louisa Frederica Mainwaring (1894-1985) (1894–1985) Parents Guy Mainwaring Gertrude Henrietta Williams Children John Guy Salusbury-Trelawny Philip Michael Salusbury-Trelawny Laetitia Ann Salusbury-Trelawny Siblings Alberta Laura Mainwaring Dorothy Catherine Mainwaring Partners John Maitland Salusbury-Trelawny