Catherine St. John Peerage person ID=394342 (1496–1553) Parents Sir John St. John Sibyl verch Morgan Children Rhys ap Gruffydd Elis ferch Gruffudd ap Rhys Siblings Alice St. John John St. John Margaret St. John Alexander St John James Skydmore (Scudamore), of Kentchurch Partners Gruffydd ap Rhys ap Thomas Peter Edgecumbe