Maclean of Ardgour v. Maclean 1941 S.C. 613:
" From an allowance of proof the Court excluded all questions relating to the chieftainship and the relative positions of the parties within the clan, holding that neither chiefship of a whole clan nor chieftainship of a branch of a clan was a legal status justiciable in a court of law, but had the character of a social dignity only, and, accordingly, that the Lord Lyon had no jurisdiction to decide the disputed question of who had right to the chieftainship either directly or incidentally when disposing of the claims for supporters and for a birthbrief. [..] Observations: [...] on the meaning of "chief" and "chieftain" in the law and practice of arms, with opinion by the Lord Justice-Clerk that in the recorded cases in which a Lord Lyon had made a declaration of chiefship the declaration had been merely a ministerial act and not a finding in his judicial capacity upon a disputed question."
Lord Justice-Clerk, in Maclean of Ardgour v. Maclean 1941 S.C. at p. 636:
"There is no instance in the registers of any judicial decision by Lyon in a disputed question of chiefship or chieftainship…. In none of the writs which were before us can I find any support for a conclusion that Lyon at any time either claimed, or exercised, a jurisdiction to determine disputes as to which of competing claimants to chiefship or chieftainship was to be preferred."
Lord Wark, in Maclean of Ardgour v. Maclean 1941 S.C. at p. 657:
"I agree with your Lordships that Lyon has no jurisdiction to entertain a substantive declarator of chiefship of a Highland clan, or of chieftainship of a branch of a clan. [...] The question of chiefship of a Highland clan, or chieftainship of a branch of a clan, is not in itself, in my opinion, a matter which involves any interest which the law can recognise.