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Abreu is a Portuguese language surname. The surname is particularly prevalent among those of Portuguese and Sephardic Jewish descent. The surname is also found in Sri Lanka where it was introduced during Portuguese rule in Sri Lanka where the spelling has been corrupted to De Abrew.
The source of the name is debated. The family name has a Portuguese form, and has been explained as being an ancient branch of the house of Normandy[2][3]via the Countship of Évreux, France. It has also been linked to the name Abraham (Portuguese Abraão), the Biblical figure. Some argue that it is an abbreviation of the Portuguese phrase “Abraham The Hebrew” (Portuguese Abraão O Hebreu).