Medieval Sorrow on Instagram: "Joanna of Castile (1479–1555), also known as Joanna the Mad (Juana la Loca). The painting itself is a panel from the Last Judgement Triptych of Zierikzee, painted by an artist known as the Master of Affligem (or Master of the Joseph Sequence) between approximately 1495 and 1506. Joanna was the third child of King Ferdinand II of Aragon and Queen Isabella I of Castile, the "Catholic Monarchs" who unified Spain. She was known for her intelligence as a young woman and