Complex sentence: By 1442 he was lieutenant at Fresnay under Sir Richard Woodville and held the same position under Osbert Mundeford when he surrendered the castle to the French in 1450.
Split into simpler sentences: By 1442 he was lieutenant at Fresnay under Sir Richard Woodville. He held the same position under Osbert Mundeford when he surrendered the castle to the French in 1450.