Tirso de Molina
Calderón evidently exerted no direct influence on English playwrights before 1660, although one play by John Fletcher and one by Philip Massinger are probably based to some extent on Spanish originals, and James Shirley's "The Young Admiral" and "The Opportunity" are adaptations of plays by Calderón's contemporaries Lope de Vega and Tirso de Molina respectively.