Great grandparents - David Brownlie McMillan and Margaret Muir Crawford

1900 Marriage
David and Margaret were married on 28th December 1900 at Auchentibber, Blantyre
David McMillan, age 22 –residing at Auchentibber, Blantyre. Occupation Coal Miner (Bachelor). Son of William McMillan, Coal Miner and Jane McMillan ms Brown.
Margaret Crawford, age 20 – residing at Auchentibber, Blantyre. Occupation Farm Servant (Spinster). Daughter of Robert Crawford, Carter and Margaret Crawford ms Muir
Witnesses – Jane Crawford and Alexander Smith – in 1871 census there is a Jane Brown daughter of Robert and Margaret Crawford – is this Jane?

1901 Census shows David McMillan and family living at 10 Craig Row, Auchentibber, Blantyre
David McMillan, age 22 – born circa 1879 in Ireland – Occupation Coal Miner
Margaret Crawford McMillan, age 20 – born circa 1881 in Wilsontown, Scotland (see page 21 on the history of Wilsontown).
Mary McMillan (my grandmother) - age 8 months – born 1900 in Auchentibber, Blantyre

Death 1942 - Margaret Muir Crawford (McMillan) died at 0615am on 6th October 1942 aged 61 years at 10 Clyde Avenue, Ferniegair, Hamilton Lanark – this would make her born ca 1881.
Cause of death – Cardio vascular degeneration. Daughter of Robert Crawford, Railway Carter, Deceased and Margaret Crawford ms Muir (deceased). Certificate signed by David McMillan, widower.
Children :-
Mary McMillan (married William Murray)
Duncan McMillan (married Elizabeth)
David McMillan (married Nancy Goodwin)
Margaret McMillan (married James McDougall)
Jean McMillan (married Sommerville)
Thomas McMillan????