 In 1487 Iain Maclachlan of Strathlachlan , witnessed a bond by Dougall Stewart of Appin to Colin Campbell , 1st Earl of Argyll . Iain died sometime around 1509 and his son Gillescop ( or alternately Archibald ) married a daughter of Iain Lamont of Inveryne , the chief of Clan Lamont . Iain was succeeded by his son , Lachlan , who later on forcibly ejected Archibald Lamont of Stroiog from his lands . For this , the Maclachlan chief was summoned before the Privy Council , which ruled that even though Lachlan claimed Lamont lands through his maternal grandfather ( the chief of Clan Lamont ) , that a Lamont heir was more preferable to a Maclachlan heir . Lachlan died sometime between 1557 and 1559 , and was succeeded by his second son , Archibald . In 1587 , the chief of the clan , " M 'Lauchlane " , appears on the roll of names of the landlords in the highlands and the isles , on whose land broken men dwelt . Archibald had only daughters and in turn was succeeded by his nephew Lachlan Og ( " Lauchlane oig Macklauchlane his brothers sone " ) . 
