yes they were married and had two kids together
Kevin Federline married Britney Spears on September 14, 2004. They divorced in 2007.
Kevin Federline and Britney Spears married on September 18, 2004. Their divorce was finalized in July of 2007, so their marriage lasted a few months shy of three years.
Britney Spears was 24 when she married Jason Alexander and later that same year, Kevin Federline.
They filed November 7, 2006 and it was finalized July 2007.