The kelpie is a shapeshifting water spirit from Scots folklore, able to take the form of a human male or a horse. They can be malevolent or benevolent, known for drowning the unwary or wooing human lasses. This illustration takes its inspiration from a tale of a benevolent kelpie. In this account, a girl is wooed by a kelpie in human form. Charmed but wary, she takes his magic necklace from him while he sleeps, binding him in his equine form. After serving her faithfully for several years as a horse, he wins her trust and the two are wed.