John Benjamin Sainsbury British businessman, eldest son of John James Sainsbury, founder of the Sainsbury's supermarket chain (1871–1956) Parents Mary Ann Sainsbury John James Sainsbury Children Robert Sainsbury Nora Sainsbury Vera Mabel Sainsbury Alan Sainsbury, Baron Sainsbury Siblings Paul James Sainsbury Arthur Sainsbury George Sainsbury Alfred Sainsbury Elsie Sainsbury Mary Ann Sainsbury Lilian Sainsbury Alice Sainsbury Dorothy Maud Sainsbury Louise Sainsbury Frank Sainsbury Partners Mabel Miriam van den Bergh