No. Michael Sheen is Welsh whilst Charlie is American. Michael's father is a part-time Jack Nicholson look-alike!
No. Martin Sheen is American and his real name is Ramon Gerado Antonio Estévez. Sheen is just a stage name.
I think that he only has one other brother and his name is Emilio Estevez.
No. Michael Sheen is Welsh whilst Charlie is American and was actually born Carlos Irwin Estevez.
i think 3...
Yes, both are sons of actor Martin Sheen. Emilio chose to keep the family's last name, Estevez. Charlie took his father's stage name, Sheen.