Hello All,
To try and obtain some further detail to explain the anomolies I made reference to
http://www.familysearch.org" onclick="window.open(this.href);return false;
If you don't mind, to save space, Alexander Aitcheson will now be simply AA.
Assuming the AA said by Jackson's (p561) to have been first mentioned in 1746 was ending his apprenticeship in that year he'd have been born around 1725. The web site identifies 6 AAs born in Scotland between 1717 and 1730, most of them in Midlothian. Which one is AA I is not clear.
Assuming again the AA said to have been free in 1770 was born around 1749 there are 7 of them shown born between 1743 and 1750 but only two with the father's name AA. Significantly there was one born in 1747 in Edinburgh . There's a later reference to an AA marrying in Canongate Edinburgh in 1774 who said he was born in 1749. There are no AAs recorded on the site as born 1749. My guess is that this is AA II and born 1747 (he lied about his age).
The main detail to come out of the research is the large number of AAs around at this time where one would expect the name to be fairly limited.
With the large number of AAs around born between 1717 and 1750 the one in Montrose in 1785 might not be AA I or II and unlikely to be AA II's son AA III as a 1774 marriage would make him only 15 years or so old at most (yes I know a son could have been born before the marriage but none is on the web site!).
Mike
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