In 1738 his father died. John inherited Kilcash and other parts of the lands of Garryricken Manor, which had been created for his grandfather
Richard Butler of Kilcash shortly after 1639 and had been divided between his father and his uncle John, who held Garryricken House itself. He did not inherit any title as his father held none. In 1758, on the death of the
1st Earl of Arran, his father's second cousin, he unknowingly became
de jure the 15th Earl of Ormond. It had been believed that all the titles of
James Butler, 2nd Duke of Ormond became forfeit in 1715. However, in 1791, it would be found that the title of "Earl of Ormond" (and its subsidiary titles) in the
peerage of Ireland had merely lain dormant and so could be successfully revived by John Butler's cousin,
John Butler, 17th Earl of Ormonde. Following the second Duke's attainder, the Ormond estate was administrated by the Forfeited Estates Commissioners. With the permission of the
Parliament of Great Britain in passing the
Crown Lands (Forfeited Estates) Act 1720 (
7 Geo. 1. St. 1. c. 22), the estate was purchased in 1721 by the second Duke's brother, Charles, the Earl of Arran. Arran died childless in 1758. The estate passed to his unmarried sister Lady Amelia Butler, who held it for about two years. On her death in 1760, the estate was inherited by John Butler, the subject of this article. == Marriage ==