"Variant of Andrew"
The name Andreu is commonly a male name from the "Scottish" origin.
Andreu is the Catalan form of Andrew, the name that enters Catalan through the Greek Andreas. It is the standard Catalan spelling of the name and is long established in Catalan-speaking areas, where it also appears in place and church names such as Sant Andreu. Its presence in United States birth records from 1987 reflects a name already in use in Catalan rather than a recent American coinage.
Andrew means "Manly, Courageous, Brave.".
The pronunciation of Andreu is ahn-DRAY-oo.