Marg: I don't know that this is the father of Jeannie Skillicorn b. 1880, however, the online IGI has a marriage record for Isabella Skillicorn and a John QUINE performed on the 15th October 1882 at Saint Thomas in Douglas. The age of the bride is given as 23 years (b. 1859), and as the 1881 census indicates Isabella's age as 22 years (b. 1859), it could well be this is one and the same Isabella.

You might want to try to get a copy of a Will for John Quine to see if there is any mention of Jeannie as his [adopted?] daughter.

Hope this helps.