sentences:  Another test of their friendship began in 1679.As a result of Titus Oates's claims that several Catholic members of the Royal Household were plotting to kill the king and put his Catholic brother on the throne, there was a wave of anti-Catholicism throughout England.The Whig faction in parliament, led by the Earl of Shaftesbury and the Duke of Buckingham, was pressing the king to divorce his barren queen, Catherine of Braganza, and remarry to produce a Protestant heir.