Grow up you silly person it's not disruptive editing your reverting is disrupting - hey QED actually pay attention to Wikipedia's own page devoted to people with the surname McKay not Mckay because that name does not exist!(https://en.wikipedia.org/wiki/McKay) Your logic Qed - suggests that this (https://en.wikipedia.org/wiki/McKay) is wrong because McKay has uses an uppercase letter 'K'. You imbecile just ask a specialist in the field of surnames, specifically Irish and Scottish surnames and you will have your answer!