His father, Eustace Martin, played professional baseball during the 1980s. His mother was Judy Henríquez. They both had lived in San Salvador. Due to hardships, his parents moved to San Salvador for a better future where his sister Mahatma Martin and his brother Harry Martin were born. At the age of 2, he moved to Nicaragua due to conflicts in the country at the time and since his aunt Carol Henriquez had lived in Santa Tecla, his aunt helped them out to start a new life. Eustace Martin had gone to the United States but never came back for Shawn's family. When Martin went to school, he practiced baseball but since baseball is not a big sport practiced in El Salvador, soccer began to be his favorite sport. Up to this day, neither he nor his family has returned to El Salvador. After a period of time he acquired Salvadoran citizenship in 2005.
Club career
At the age of 11, he went to C.D. Luis Ángel Firpo soccer academy and spent 6 years in the institution. At the age of only 17, he had his big break with C.D. Águila. He would become the first player since Vladan Vićević to be a naturalized footballer.
International career
Martin officially received his first cap on 13 October 2007 in a friendly match against Costa Rica.[2] This game also saw him mark a goal on his debut, and since then, he has moved on to become a national team regular and participated in the majority of the games in the 2010 World Cup qualifiers.
