Researched Kate Thorn as to why they were staying with her, she was Kate Jane GILBERT from Falmouth Devon married George James Thorn 1889 Falmouth registration district.
Samuel Henderson BURCH age 31, mariner married Louisa Ellen GILBERT age 27 on 17 April 1873 at Penwerris Cornwall, registered Falmouth Devon 1873, witnesses are Richard Charles GILBERT, William James BURCH and Kate Jane GILBERT.
Father of Samuel- Isaac, Master Mariner, father of Louisa- Richard master mariner.
Olga and Beryl are I expect grandchildren of her sister Louisa Burch nee Gilbert. Further research required.