Likely a modern variation of Sabrina or Sabra
Sabrea is a modern American invention, likely created as a phonetic variation of Sabrina or Sabra. While its exact etymology is unclear, it is often associated with the Celtic roots of the River Severn or the Hebrew name for a native-born Israeli.
Less common today
Sabrea isn't in the latest US Top 1000. It last peaked at #6,562 in 1995.
US births per 5-year period, 1990βpresent (SSA data).