Author: Gabriel de Guilleragues
Alternate names: Gabriel J. Guilleragues; Gabriel Joseph de Lavergne vicomte de Guilleragues; Gabriel-Joseph Guilleragues; Guilleragues, Gabriel Joseph de Lavergne, vicomte de; Gabriel Joseph De Lavergne Guilleragues; Gabriel De Lavergne; Gabriel Joseph de Lavergne  Guilleragues; sieur de Gabriel Joseph de Lavergne Guilleragues; Guilleragues, Gabriel Joseph de Lavergne comte de.; (Guilleragues, Gabriel Joseph de Lavergne vicomte de); Guilleraques, Gabriel Joseph de Lavergne vicomte de; Gabriel Joseph Lavergne De Guilleragues; Gabriel Joseph de Lavergne vicomte de Guilleragues; Gabriel Joseph de Lavergne, vicomte de Guilleragues; Guilleragues.
Title: vicomte de
Born: 18 November 1628
Died: 4 March 1685
Bio: Gabriel-Joseph de Lavergne, viscount of Guilleragues (French: Gabriel-Joseph de Lavergne, vicomte de Guilleragues) was a French author and diplomat, considered by most modern authorities to be the author of the Lettres portugaises (1669; “Portuguese Letters”).