I do not know if there is a possible connection or not but here gos....my great Grandparents are as follows; William Haddow married a Mararet McDonald and had a daughter called Jean Ingles Haddow who married James McKechnie .We do not know if Sarah had other siblings or not...most likely.
James and Jean had two children my father John(Jack Wilson McKechnie and Margaret McDonald McKechnie.
My Great grandfather William Haddow...the date we have for his birth we are unsure of but the cerca we guessed at is 1886 again we are not sure. Now we know that my father John(Jack) Wilson McKechnie and grandfather James McKechnie were from New Cumnock Ayrshire but not too sure about the Haddows. My Dad had a son called James who we called Jimmy born in the 40's he died about 5 yrs ago in the south of England Anyway if the names match up please let me know. Thanks