oak's letter is the event item you use in order to obtain Shaymin (some spell it Shemi or Sheimin)
Guy Williams was born on January 14, 1924.
Guy Browning was born in 1964.
Guy Jacques was born on August 17, 1958.
Yes. You are born your gender
Guy of Avesnes was born in 1253.
Guy Joachim was born in 1955.
Guy Bignell was born in 1886.
Guy Harwood was born in 1939.
Guy Goodwin was born in 1947.
Guy Berthiaume was born in 1950.
Guy Overfelt was born in 1977.