Andrei Rublev was a renowned Russian icon painter who lived during the 15th century. He is best known for his religious artworks, particularly his icons and frescoes, which reflect the spiritual depth and beauty of Orthodox Christianity. His most famous work is the Trinity Icon, which depicts the three angels visiting Abraham and is celebrated for its harmony and color. Rublev's style is characterized by its use of soft lines and vibrant colors, creating a sense of peace and divine presence. His contributions to Russian art have made him a pivotal figure in the history of Eastern Orthodox iconography, influencing generations of artists and spiritual seekers alike.