The year 1772 was marked by the discussion of a measure which the King seems to have regarded as one of private interest only, affecting his personal rights over his own family.  But it is impossible to regard transactions which may affect the right of succession to the throne as matters of only private interest.  And indeed the bill was treated as one involving a constitutional question by both sides of both Houses, and as such was discussed with remarkable earnestness, and with vehemence equalling that of any other debate which had as yet taken place since the commencement of the reign.  The bill had its origin in the personal feelings of the King himself, who had been greatly annoyed at the conduct of his brother, the Duke of Cumberland, in marrying a widow of the name of Horton, daughter of Lord Irnham, and sister of the Colonel Luttrell whom the vote of the House of Commons had seated as member for Middlesex; and perhaps still more at the discovery that his other brother, the Duke of Gloucester, to whom he was greatly attached, had married another subject, the widowed Lady Waldegrave.  His Majesty’s dissatisfaction was, perhaps, heightened by the recollection that he himself, in early manhood, had also been strongly attracted by the charms of another subject, and had sacrificed his own inclinations to the combined considerations of pride of birth and the interests of his kingdom.  And, though there was a manifest difference between the importance of the marriage of the sovereign himself and that of princes who were never likely to become sovereigns, he thought it not unreasonable that he should be empowered to exercise such a general guardianship over the entire family, of which he was the head, as might enable him to control its members in such arrangements, by making his formal sanction indispensable to the validity of any matrimonial alliances which they might desire to contract.  A somewhat similar question had been raised in 1717, when George I., having quarrelled with the Prince of Wales (afterward George II.), asserted a claim to control and direct the education of all the Prince’s children, and, when they should be of marriageable age, to arrange their marriages.  The Prince, on the other hand, insisted on his natural and inalienable right, as their father, to have the entire government of his own offspring, a right which, as he contended, no royal prerogative could be enabled or permitted to override.  That question was not, however, brought before Parliament, to which, at that time, the King could, probably, not have trusted for any leanings in his favor; but he referred it, in an informal way, to the Lord Chancellor (Lord Cowper) and the Common-law Judges.  They investigated it with great minuteness.  A number of precedents were adduced for the marriage and education of the members of the royal family being regulated by the sovereign, beginning with Henry III., who gave his daughter Joan, without her own consent, in marriage to the King of Scotland, and coming down to the preceding