Henry claimed to be heir to “John Lord Holyroodhouse, 8th February 1734, and presented to the king a petition claiming the title. This petition was by his majesty's commands laid before the House of Lords, 20th March 1734, but no determination was ever come to respecting it. He nevertheless assumed the title, and died in Canongate, Edinburgh, 10th February 1755. “
87His claim was based on a different pedigree than his father had set forth. Henry claimed his great grandfather, Adam Bothwell of Quelpsyde, was the son of William, the second son of the Bishop of Orkney. Howevr, it is known that William, son of the Bishop, was his fifth son rather than his second and that he died without issue. His brother, Capt. George Bothwell, was declared
to be his heir.
Also, the book stated “By his wife, Mary daughter of Lord Neil Campbell of Ardmaddie, second son of Archibald marquis of Argyle, he had five sons and four daughters. None of his sons had male issue, and the peerage may now be said to be extinct."
87CP stated that since Henry’s death, the title “has remained dormant, not being assumed by any of the five of his eight sons who lived to Man’s estate.”
75 Only one of the sons, Robert, the 7th, produced an heir, Margaret, but no male heir.
In 1740, Henry acquired the former residence of the Countess of Hyndford by purchasing it from her.