George Martinez (1933- ) grew up in Williamsburg, Brooklyn with two sisters. His parents were both born in Columbia, as well as his older sister Grace Martinez De La Rosa (1923- ), who worked as a welder at the Brooklyn Navy Yard during WWII. After marrying, Grace Martinez De La Rosa moved to Mexico City, while George Martinez worked for the US Postal Service and currently lives on Long Island. Grace Martinez De La Rosa (1923- ) was studying to become a teacher in college when WWII began and she left to work at the Navy Yard.