OIL PAINTING: Tristan and Isolde with the Potion
Here is the story behind the "Tristan and Isolde with the Potion" of Waterhouse. Before Tristan and Isolde the Fair left Ireland, Queen Isolde had prepared a love potion for her daughter and King Mark. The Queen gave the philtre to Brangwain, her daughter's companion and maidservant, to administer the potion to her daughter and the king (Mark), because she suspect that her daughter would not be happy with the Cornish king.
As Tristan sailed back to Ireland with Isolde, they became thirsty. Tristan found the bottle of wine containing the love potion. Together they shared the wine, and fell instantly in love with one another.