The spelling of the word "mcmillon" can be confusing due to the combination of the letters "mc". However, this is actually a common prefix in Scottish and Irish names that means "son of." The correct pronunciation of "mcmillon" is /məkˈmɪlən/, with the emphasis on the second syllable. The "mc" is pronounced as a single sound, akin to the "mick" in "Mickey Mouse." So the name actually means "son of Millon," with "Millon" being a possible variant of the name "Milne."