Angelo Branduardi used British (not specially English) material in French and/or Italian: The Trees They Do Grow High ("Gli alberi sono alti" / "Les arbres ont grandi" here sung with Alan Stivell), Mary Hamilton Ninna nanna ("Lullaby") / "L'enfant clandestin", Il Cigliegio, / "Le Cerisier" (the cherry tree) is based on a medieval Gaelic tune but I don't know which one.