The family of Radcliffe continued, during several centuries after the intermarriage with the De Derwentwaters, to increase in wealth and importance. It was not, however, ennobled until the reign of James the Second, in 1688, when, in consequence of the eldest son of Sir Francis Radcliffe having married during his father's life time the Lady Mary Tudor, a natural daughter of Charles the Second, by Mistress Mary Davis, Sir Francis was created Earl of Derwentwater, Baron Dilstone, and Viscount Langley.[177] "This alliance to the royal blood," says the biographer of Charles Radcliffe, "gave them a title to match with the noblest families in the kingdom, and was likewise the occasion of that strict attachment which the several branches of the Derwentwater family have inviolably preserved for the line of Stuarts ever since."[178] There was also another reason for this act of royal favour on the one hand, and for this devotion on the other: Sir George Radcliffe, we find by the Macpherson papers, was Governor of James the Second when he was Duke of York, and during the troubles of the Great Rebellion; and, under his care, the young prince remained some time in the city of Oxford.[179] Whatsoever may be thought of the effect of this connection with royalty, in ennobling an ancient and loyal race, the marriage produced a lasting influence on the fortunes of the family. That they were proud of the alliance appears from the circumstance that the children of that marriage used to wear the prince's feather, that plume which has, since the days of Edward the Black Prince, distinguished the heir apparent to royalty. But the consanguinity in blood to the Stuarts produced another, and a far more serious result. The sons of the Lady Mary Tudor and of Francis, second Earl of Derwentwater, were educated, like brothers, with the son of the abdicated monarch. James Radcliffe, who was born about the year 1692, and who afterwards became Earl of Derwentwater, passed his childhood at St. Germains with his royal namesake, James Stuart. The brother of the Earl, Charles, was also brought up in France; both of these youths, whose fate was afterwards so tragical, were reared in the faith of the Church of Rome, and under the tuition of the Roman Catholic clergy. They thus grew up, without perhaps hearing, certainly without entertaining, a doubt of those rights which they died to assert. "The late Earl of Derwentwater," writes the biographer of Charles Radclyffe, "and his brother Charles were so strongly attached to the Pretender's party, that their advice or consent was not so much as asked in those consultations that were held among the disaffected previous to the Rebellion; neither did the party think it necessary, because they were always sure of them whenever they should come to action."