 On 12 February 1747 Donald Maclachlan of that Ilk received a charter for his lands "at the intercession of the Duke of Argyll", though it was considerably unpopular decision at the time, and Maclachlan's estates were "surveyed but afterwards found not to be forfeited".In the early 19th century, a new Castle Lachlan was built for the chiefs of the clan, and it remains the seat of the clan to this day.The last of the male line chiefs of Clan Maclachlan was John Maclachlan who died in 1942.