Marquesses of Exeter Marquesses of Exeter (first creation) First holder Henry Courtenay, 1st marquess of Exeter, 10th earl of Devon * c. 1498 Records #1 Holders Family filter On/Off 1 Henry Courtenay, 1st marquess of Exeter, 10th earl of Devon * c. 1498 Corrections and Updates To suggest a correction or an update. Click Here