Sometimes it can be difficult to recall that the younger Sheen hails from a well-known family because of his shenanigans. In order to succeed in Hollywood, Father Martin Sheen had to hide his real name, Ramón Gerard Antonio Estévez, which is how he acquired his renowned family name. Nevertheless, he gave his son the name Carlos Estevez, who later adopted the more Hollywood-friendly moniker, Charlie. They have collaborated on numerous film productions, making them one of the most well-known families.

@Martin Sheen Tears Up Talking About Son Charlie's HIV Diagnosis/Entertainment Tonight/YouTube.com