Robert O'Brien started making guitars in 1997 in São Paulo, Brazil under the guidance Antonio Tessarin. On his return to the USA he studied guitar making with Kent Everett in Atlanta and also in Spain with José Romanillos. O'Brien makes classical and acoustic guitars and in 2003 he founded the Lutherie Program in the Fine Woodworking Department at Red Rocks Community College in Denver, CO.

Source: O'Brien Guitars website (21 September 2018)