sentences:  Art historian Roy Strong contends that these are in fact portraits of John's son and daughter-in-law, William Petre and Katherine, daughter of the Earl of Worcester.The portraits are colourful and relaxed, showing fashionable changes in costume.Lord Petre wears a white ruff over a lace collar, embroidered doublet, the full breeches, bobbed hair, moustache and slight beard and, in the fashion of the time, the minute patch of hair below the bottom lip.