Possibly a modern blend or variation of Cambria
Kambrea is likely a modern American invention, often used as a creative variation of Cambria, the Latin name for Wales. It may also be a phonetic blend of names like Kamryn and Breanne. Because it is a contemporary creation, it lacks a singular traditional etymology.
Less common today
Kambrea isn't in the latest US Top 1000. It last peaked at #9,749 in 2009.
US births per 5-year period, 1990βpresent (SSA data).