He was born Slavko Romčević to a Serbian family in the small village of Stipan near Lasinja, Croatia in what was then the Kingdom of Yugoslavija . Romcevich arrived to the United States in 1922 as a 16-year old, joining his brother, Gjuro (George) Romčević who emigrated and arrived in the United States first.
Slavko Romčević was born to a Serbian family in the village of Stipan near Lasinja, Croatia, which was part of Yugoslavia at the time. In 1922, he immigrated to the United States as a teenager, following his brother Gjuro (George) who had already settled there.