For most of the 20th century, this constituency and one of its successors was held by four members of the Guinness family. When Rupert Guinness was elevated to the Peerage upon the death of his father, he was succeeded by his wife, Gwendolen.
For a significant portion of the 20th century, this constituency was held by members of the Guinness family. When Rupert Guinness became a member of the House of Lords upon his father's death, he was succeeded by his spouse, Gwendolen.