Who was Lord Karinthon, murdered 1665?

Lord Monson presents his compliments to the Editor of "NOTES AND QUERIES," and has the pleasure of answering a Query contained in this day's Number, p. 440.; and takes the liberty of adding another. The English nobleman murdered at Pontoise was Charles Smith, Viscount Carrington of Barrefen, Ireland, and Baron Carrington of Wotton Warem, co. Warwick; the date in the pedigrees of the murder is usually given 1666, probably March 1665-6. The last Lord Carrington died 17 May, 1706: the estates of Wotton came to Lewis Smith, who married Eliz., daughter of William Viscount Monson, and relict of Sir…