Lyonors

Probably from Middle English lyon meaning "lion". It appears in Thomas Malory's 15th-century compilation of Arthurian legends Le Morte d'Arthur, belonging to a woman who had a child with Arthur [1]. Alfred Tennyson used the name in his poem Gareth and Lynette (1872) for the sister of Lynette (this character is called Lyonesse in Malory's version of the story).