Like much of his 1950s work, Study For Portrait II suggests the influence of Bacon's long-time lover Peter Lacy. Dublin-born Bacon, who lived much of his life in Soho until his death in 1992, had just returned from visiting Lacy in Morocco when he painted the portrait. Ms Ordovas said: "Is the painting a representation of a Pope, inspired by Peter Lacy or is it a figure of his father? It's an incredibly powerful and striking image."