I have a Jane (possibly Jean) Wylie, youngest daughter of Thomas Wylie of Caddle Park/Farm Ardrossan, born in Stewarton Ayrshire in abt 1823. She married James Whiteford of Campbeltown Argyllshire in 1849. She was the grandaughter of George Morton of Skylahill (Newmilns???) Ayrshire.
Does this fit any of the Wylies you have in Stewarton?
Look forward to hearing back about this.