19th – John Buchanan, (Guthrie Smith identifies him as 15th Chief and Buchanan of Auchmar identifies him as 22nd Chief) married in 1653 Mary Erskine and by her a daughter (Elizabeth). After the death of Mary, he married in 1677 Jean Pringle and by her had a daughter (Janet). When he died in 1682, he left no male heirs. He made two attempts to pass the chiefship to suitable candidates by arranging their marriage to his oldest daughter (Elizabeth). Firstly to Robert Buchanan, Advocate (the son of John Buchanan of Arnprior), and secondly to Major George Grant (details in a following section). In both cases, Elizabeth refused these arranged marriages. Consequently, no arrangement was finalised by which chiefship could be passed on to the descendants of his daughter. He inherited significant debt and during his chiefship, significant parts of the Buchanan Estate were sold, and the final portions of it were lost due to defaulting on creditors. With the lack of male heirs, the direct chiefly line ended at this time.