Gascon campaign of 1345
By this time the French had diverted their main effort to the south-west , under the overall command of John , Duke of Normandy , the son and heir apparent of King Philip VI of France . 
<triplet> John, Duke of Normandy <subj> Philip VI of France <obj> father <triplet> Philip VI of France <subj> John, Duke of Normandy <obj> child