Boy accompanied his master from 1642 to 1644 during the
English Civil War. Rupert was the iconic Royalist
cavalier of the conflict and was frequently the subject of
Parliamentarian propaganda. Boy, who often accompanied Rupert into battle, featured heavily in this, and was widely suspected of being a witch's
familiar. There were numerous accounts of Boy's abilities; some suggested that he was the
Devil in disguise.
John Cleveland and other Royalist satirists and parodists mocked these Parliamentarian attitudes and produced lampoons that satirised the alleged "
superstition" and "
credulity" of their opponents; Cleveland claimed that Boy was Prince Rupert's
shapeshifting familiar, and of
demonic origins. Other satirists suggested that Boy was a "
Lapland Lady" who had been transformed into a white dog. Boy was also "able" to find hidden
treasure, was invulnerable to attack, could catch
bullets fired at Rupert in his mouth, and
prophesy as well as the 16th-century
soothsayer,
Mother Shipton. Royalist soldiers also promoted Boy, as their adopted
mascot, to the rank of
Sergeant-Major-General. Reportedly, Boy had other endearing attributes, such as cocking his leg when he heard the name of
John Pym, leader of the Parliamentarian forces. He was also alleged to have performed for Charles I, slept in Prince Rupert's bed, and played with Princes
Charles,
James,
Harry and
Princess Henrietta, and was often fed roast beef and
capon breast by Charles I himself. ==Death==