Slim pickings I know, but is there any possibility that James McClelland who married Annie Duncan in Kilbride Church of Ireland some 7 months before Margaret Jane's birth in 1883 are the parents?
Such is a big leap, not least that the names McClelland / McClean somehow morphed together in pronunciation and record documentation.
But lots of other brick walls are hitting back, not least why the mother in the census is called Oliver - possibly remarriage(s)?
Not as simple as I first thought, you might want to ask a moderator to move it to County Antrim.