The question often arises of the period during which the 3 separate proclamations of banns could or should be made.
While checking in G.T. Bisset-Smith's Vital Registration - A Manual of the Law and Practice concerning The Registration of Births, Deaths and Marriages: Registration Acts for Scotland; with Relative Notes on Vaccinations and the Census, Forms, and Tables of Fees &c., Edinburgh, William Green & Sons, Law Publishers, 1907, in connection with James Henderson's query, I came across the following:-
It shall be in the power of the minister, but in no case obligatory upon him, to complete the proclamation of banns in a single Sabbath, in the case of persons who are well known to him, or in regard to whom he has reason to be satisfied, on the information of others, that there is no impediment recognised by the laws of this Church [sic - looks like this has been "lifted" from a communication from the Auld Kirk?] to the proposed marriage. In this case the certificate [of due proclamation of banns] shall not be granted until forty-eight hours after proclamation has taken place, and it shall have the same effect as if proclamation had been made on two separate Sabbaths..
So there you have it, along with the implication that the 3 crying of the banns was commonly over just two Sundays.
Later, in the marriage section of Bisset-Smith there is this rather neat summary regarding marriage in Scotland, itself extracted from Bells' Principles:-
"By the law of Scotland marriage is a consensual contract, requiring no particular solemnity, nor even written evidence, but deliberate and unconditional consent alone. There is no restraint on account of non-age, but that which proceeds from incapacity of consent in persons under puberty. There is no absolute necessity for publication, or solemnity, or particular place or time of celebration. There is no necessity for the consent of parents or of guardians."
Note the date of publication of G.T. Bisset-Smith's book, i.e. it obviously can't take account of later legislation.
Amazing what you can get up to at 2:30 in the morning, - it's been a difficult evening/night involving an extremely ill old cat who is most probably going to have to make his last ever journey to the vet in a few hours ...................
David