Complex sentence: In 1450 his father had received license to erect an oratory at the manor house, and in 1474 his elder brother, Thomas Clopton, obtained permission from Pope Sixtus IV to add a chapel to the house for the celebration of divine service.
Split into simpler sentences: In 1450 his father received license to erect an oratory at the manor house. In 1474 Thomas Clopton, Hugh's elder brother, obtained permission from Pope Sixtus IV to add a chapel to the house for the celebration of divine service.