"The Legends of Saint Patrick" is a collection of poems that retell the story of Saint Patrick, the patron saint of Ireland. These poems cover various aspects of Saint Patrick's life, from his capture as a slave to his missionary work and eventual death. De Vere's work explores the myths and legends surrounding the saint, presenting him as a figure of great spiritual importance to the Irish people. The poems are rich in imagery and symbolism, making them valuable to Irish literature.