The 6th of January was the assumed Candlemas target date for the first night performance to be given before Elizabeth I in 1602, and TWELFTH NIGHT has therefore remained the title by which the play is generally known. However, WHAT YOU WILL lingers as its supplementary nomenclature (and most likely originally intended) title.
Ian Drysdale, Emmy Stonelake and Jocelyn Jee Esien in 'Twelfth Night or What You Will' at Shakespeare's Globe. Photo by Helen Murray