Maybe a little more confusion?
The marriage that you have for Hugh McMenemeny Snr to an Agnes McDonald in 1873 in Dundee shows Hugh Snr being a marble cutter/fitter.
It is Hugh Jnr. born c. 1872 who shows as a carter by occupation in later years.
For Hugh Jnr, you have the following docs/images:
1872 birth of an illegitimate boy in Dundee, Hugh MacDonald, to Anges MacDonald (your Hugh Jnr was pretty consistent with his Dundee birth place).
1873 marriage between a Hugh McMenemeny (Snr) and an Agnes MacDonald
1881-1891 You have the family of Hugh McMenemy and Agnes, with their children in Glasgow, including the Dundee born eldest, Hugh Jnr. Indeed, in 1891, Hugh Jnr shows as just married with his wife Margaret in household of his parents.
1901 onwards, you have your Hugh Jnr with his wife and family going forward.
So, apart from a mistake/variation of mother Agnes' surname from MacDonald to Dowl on her son's marriage entry in 1890-1, you have so much on his whole family! Who were the witnesses to this marriage? What address was given for Hugh Jnr. at the time of his marriage to Margaret?
Have you checked Hugh Jnr.'s death registration to see what that says?
Have you firmed up and viewed Hugh McMenemy Snr and Agnes' marriage and death cert to firm up their parents?
You are pretty much there, murphydog, with all your hard work
Monica