http://books.google.com/books?id=WDoFAAAAYAAJ&pg=PA7&dq
http://books.google.com/books?id=0Bhkop1x8UsC&pg=PR13&dq
http://books.google.com/books?id=HMfxik19s18C&pg=PA126&dq
His older brother, the Earl of Mornington was an early supporter of Catholic Emancipation.