He spent the largest part of his life in France in service to the archbishop of Lyon, Paul-François de Neufville de Villeroy.
Loeillet added "de Ghent" to his surname to avoid confusion with his cousin, Jean-Baptiste Loeillet of London (1680–1730), who was a well-known musician and composer in London.
The similar names have often caused confusion and mis-attribution of works, such as Alexandre Beón's arrangement of the C minor Piano trio for recorder, oboe, and basso continuo for modern instruments (the Piano Trio in B minor, now reprinted by International) incorrectly attributed to Loeillet de Ghent.
Forty-eight sonatas for recorder and continuo were printed in Amsterdam in 1710 and 1717 and, "clearly popular" per musician, composer and historian John W. Duarte,[1] were re-printed in London by Walsh & Hare in 1712 and 1722.
Duarte called the sonatas "in the style of Corelli" and placed the composer's work in the baroque period.