[3] He assisted Giambologna's foreman, Pietro Tacca, in Paris, in finishing and erecting the equestrian statue of Henri IV on the Pont Neuf.
He moved to England and spent the most productive decades of his working career there, providing monuments, portraits and replicas of classical antiquities for the court of Charles I, where his main rival was Francesco Fanelli.
Though he is not otherwise documented in Florence, in Paris he was recorded as sculpteur du Roy at the baptism of his son at Saint-Germain l'Auxerrois in 1610, when a royal secretary and the daughter of another served as witnesses.
After being hidden by the man charged with destroying the statue, it resurfaced at the Restoration and was erected in 1675 at the original site of Charing Cross, at Trafalgar Square, London (on a small traffic island at the entrance to The Mall).
There are bronze sculptures by Le Sueur for tombs in Westminster Abbey, of the Stuart Kings Charles I and James I originally in niches on the former screen by Inigo Jones in Winchester Cathedral and now re-located at the west end of the Cathedral in which Le Sueur also provided the bronze reclining figure for the tomb of Lord Portland.