McCallum - Clifton (Tyndrum), Killin Parish to Bonhill, Dunbartonshire to Glasgow and Clydebank

I am looking for any information on the family of Malcom McCallum, cattle drover 1760ish-18?? and his wife Margaret Fletcher b. Ardchatton, Argyll 1770ish (suspect parents Peter Fletcher and Euphemia McVean), died abt 1852 Clifton. Offspring, all born Clifton Christian b. 1793, m. Archibald McIntyre 1820 Killin, d.1873 Glencoe; Duncan b.1794; Hendral/t b.1796; Janet b.1797 possibly m. Donald Sinclair 1823 Killin; Mary (on 1851 census in Clifton with mother Margaret 'on parish', did not marry) no death record yet found, need to look at poor records in NAS); Donald (gamekeeper) b.1804, m. Mary Campbell 1844 Bonhill d. 1854 Bonhill Poorhouse of cholera; Peter b.1805, with mother Margaret in 1841 in Clifton described as a cattle dealer, no further info found.

My ancestor Donald McCallum's family moved to Glasgow (Dalmarnock Road). They were all in the print industry. Wife Mary Campbell had a 'bidey in' (no marriage record) Thomas Burns b. Manchester and two more children Agnes and Annie both born Bonhill so move to Glasgow after 1866. Son Dugald married Jessie Semple (dau. of John Semple and Jane Primrose) and moved to Clydebank (this is my line).