Under Domhnall, as the second Lord of the Isles, Lachlan took due precaution to have his lands confirmed by charter, which occurred in 1390.
The date of his death is not known, but it must have been before 1405, for on 28 January 1405 at Dundonald, Hector was a witness to a charter confirmed by the king in favour of James Kennedy.
Lachlan Lubanach is generally regarded as the first Maclean of Duart because the oldest recorded charter in existence is in his favour.
[3] A fictionalized account of Lachlan's marriage and coming in possession of Duart was given by Fitzroy Maclean in The Isles of The Sea.
This article incorporates text from A history of the clan Mac Lean from its first settlement at Duard Castle, in the Isle of Mull, to the present period: including a genealogical account of some of the principal families together with their heraldry, legends, superstitions, etc, by John Patterson MacLean, a publication from 1889, now in the public domain in the United States.