11 April 1862. Birth of Alexander Gordon, son of Alexander G and Jane MacDonald, at Clashmarloch, Aberlour
17 January 1866. Birth of John Gordon, son of Alexander G and Jane MacDonald
6 September 1868. Birth of Jane Rigby, daughter of William R and Janet Marshall
25 July 1872. Birth of Margaret Rigby, daughter of William R and Janet Marshall
15 October 1892. John Gordon, son of Alexander G and Jane MacDonald, marries Jane Rigby, daughter of William R and Janet Marshall
1 August 1898. Margaret Rigby, daughter of William R and Janet Marshall, gives birth to an illegitimate child.
5 September 1898. Maggie Rigby, 78 Moss Street compeared before the Keith Kirk Session confessing to having given birth to an illegitimate child and charging Alexander Gordon, coachman, Blairgowrie as the father, and who has admitted paternity.
12 May 1906. Death of Jane Rigby or Gordon, daughter of William R and Janet Marshall and wife of John Gordon
30 March 1908. William Rigby, husband of Janet Marshall and father of Jane Rigby or Gordon and of Margaret Rigby, applies to Keith Parochial Board. He states inter alia that his daughter Margaret is keeping house for a brother-in-law in Glasgow.
22 August 1910. John Gordon, son of son of Alexander G and Jane MacDonald and widower of Jane Rigby, marries his sister-in-law Margaret Rigby, daughter of William R and Janet Marshall
Question. Is Alexander Gordon, son of Alexander G and Jane MacDonald, the coachman in Blairgowrie who was the father of Margaret Rigby’s illegitimate child?
I have all the relevant birth, marriage and death certificates, and all the census records except those for Alexander Gordon after 1881. For the sake of simplicity I have not listed five children of Maggie's and six of Jane's, not all of whom were born in wedlock, or any of the siblings of Alexander and John or of Jane and Maggie, all of whom I know about.