We obtain little information respecting the Marquis of Worcester until about the twenty-seventh year of his age, when he married Elizabeth, daughter of Sir William Dormer, eldest son of Lord Dormer of Weng, and sister of Robert, Earl of Carnarvon. It is not known where he was educated, but it was certainly neither at Oxford nor Cambridge. Mention is made of his preceptor, Mr. Adams, at Raglan Castle, the baronial seat of the lords of Raglan, in Monmouthshire. There is every probability, however, that he finished his education at some foreign university. His son and heir, Henry, born in 1629, was created by Charles II. the first Duke of Beaufort, and from him the present Duke of Beaufort is the eighth of that rank in lineal descent. It was during the first or second year of his married life that he engaged the services of Caspar Kaltoff, whom he employed as a practical assistant, to work out his numerous mechanical experiments, and whom he extols as an "unparalleled workman, both for trust and skill."[1] There are still to be seen on one side of the Keep--or citadel of Raglan Castle, the remains of grooves in the wall, probably for the insertion of large metal pipes, in some way or other connected with the waterworks which are known to have been erected there, and which were most likely carried out by Kaltoff, under his master's directions. [1] Dedication to "The Century of Inventions." Becoming a widower in 1635, his lordship married in 1639, his second wife, Margaret, second daughter and co-heir of Henry O'Brien, Earl of Thomond.