« Reply #15 on: Sunday 06 December 09 10:20 GMT (UK) »
Hi Gadget, I have now had time to process the information you and others so kindly found for me and I've made excellent progress.

Documental evidence indicates that the family were using both the surnames of McLean and McLergan between the 1800s and 1850s but had standardised on McLean or MacLean by the 1860s.
I have come across another mystery that I wonder if you could help me with. I can trace Archibald's father, Alexander, through the 1841, 1851 and 1861 census records but can't find him in the 1871 census or in the death records. He was born about 1787 in Kilchoman parish and like his sons Archibald and John, was a tailor in Port Charlotte. If the information on his children's death certificates is correct then he was alive at the time of the death of his daughter Mary Brown (m.s. McLean) in May 1873 but deceased at the time of the death of his daughter Margaret McLean (m.s. McLean) in Jan 1879.
His first wife Margaret died before 1841 and his second wife Mary McLean (m.s. Brown) whom he married in 1842 died in Port Charlotte in 1862. However, I just can't find any trace of Alexander thereafter

Kind regards
Stewart
AYRSHIRE: Miller, McEwen.
GLASGOW: Miller, Ahara, McRae, McDonald.
HAWICK: Davidson, Scott, McEwen, Spalding, Hogg, Grierson, Stewart, Miller, Hilson, Pringle.
ISLAY: Brown, McLean, McDougall, Currie.
KINCARDINE: Hay, Davidson, Douglas, Scott, Welch, Rae, Watson, Croll.
PERTH: Downie, McDonald, McLagan.
RENFREWSHIRE: Ahara
DEVONPORT: Abbott, Hawton, Stevens.