Saint Gertrude, also known as Saint Gertrude the Great, was a Benedictine nun and mystic who lived in the 13th century. She is recognized for her deep spirituality and devotion to God, often focusing on the love of Christ and the importance of the Eucharist. Gertrude's writings, particularly her visions and prayers, have inspired many in the Christian faith. She is also the patron saint of cats and is often invoked for protection against rodents. Her feast day is celebrated on November 16, and she is venerated in various Christian traditions, particularly within the Catholic Church.