Still trying to understand the question which gives you all a clue to how old I am. I was born May 1958 so I'm guessing someone who debuted in or about 1974/75/76?
Good thread.
Michael Branch was the first person younger than me to play for Everton when he played in the 5-2 win at Hillsborough in 1996.
Nuno Valente was the last person older than me to play for Everton when he came on as sub away to West...