Mrs. A. T. Thomson, The Wits and Beaux of Society. Volume 2
“ Towards his own two brothers, Robert, Earl of Orford, and Edward Walpole, Horace the younger, as he was styled in contradistinction to his uncle, bore very little affection. His feelings, however, for his nephew George, who succeeded his father as Earl of Orford in 1751, were more creditable to his heart; yet he gives a description of this ill-fated young man in his letters, which shows at once pride and disapprobation. One lingers with regret over the character and the destiny of this fine young nobleman, whose existence was rendered miserable by frequent attacks, at intervals, of insanity. ”
