 On 5 November 1785, the Estate of Dunardry was advertised for sale by public auction in December after Lachlan had fallen into financial trouble, partly due to judgement debts against him.The Dunardry estate was purchased initially by Campbell of Barbeck.At least two decisions by the Court of Session in Edinburgh arose from his father's lead role in failing to account for, and to properly execute, the estate of Duncan Campbell of Kilduskland who had died in 1766.