Sorry, Margaret, but I am confused by all these brackets. When you put brackets, do you mean, for instance, that Ann (Stark) Whitten was born Ann Stark and married a Whitten, or that Ann (Scott) Stark was born Ann Scott and married to a Mr Stark?
You say that Ann (Stark) Whitten's mother was Mary Bell, then you say that you don't know if Ann Stark was married to Ann Whitten's father. Are you suggesting that Mary's child was fathered by a man who may have been her stepfather?
The 1881 census lists at 18 Pole Park Road, Liff and Benvie (which is the neighbouring parish to the west of Dundee; the city had expanded into this parish) James Gracie, aged 21, born Auchterhouse, Angus; Mary Gracie, 23, born Whitby, Yorkshire; Ann Gracie, daughter, aged 6, born Dundee; Ann Stark, mother-in-law, 47, jute reeler, born Kinglassie, Fife.
Dronley is in the parish of Auchterhouse.
If Ann Stark was aged 47 in the 1881 census, she would have been born in 1833/4. Kinghorn and Kinglassie are both parishes in Fife, and therefore mutually exclusive. They are not even next to one another.
I can't find a likely birth for Ann Gracie in the IGI. Nor can I find an Ann Whitten born in 1876 or about then. There is an Ann Whitton, but she is only six months old and living with different parents, Peter Whitton and Rachel Bruce.
James Gracie might be James Nicol Grassie, born in Auchterhosue on 5 November 1858, parents James Grassie and Agnes Taylor. In which case he should have been listed as 22 in the 1881 census, not 21.
You need to go to
www.scotlandspeople.gov.uk, invest in a few credits at modest cost, and use some of them to find and download the marriage certificate of James Gracie and Mary Bell, which a 'contributed' listing in the IGI suggests was in 1879.
Use some more credits to find the birth certificate of young Ann. If she was 6 in 1875, she was born in 1874 or 1875, but search a year or two either side. If she was illegitimate she would be registered in her mother's name; she might also be registered in her father's name, but only if he accompanied her mother to the registrar's and signed the birth certificate together with her mother.
I see that the only male Whitten in Dundee in 1881 was John Whitten, 23, general labourer, born Dundee, who was in Dundee Prison.