Soundtrack | Writer | Producer. Gwen Renee Stefani was born on October 3, 1969 at St. Jude's Hospital in Fullerton, California. She was one of four children born to Dennis Stefani and Patti Flynn. Her siblings are Eric Stefani, Jill and Todd Stefani. Her father is of Italian descent and her mother's ancestry is English, Irish, Scottish, German, and Norwegian.