Leveilly was probably a pupil of
François Blondel or of
Robert de Cotte. In 1717, at the behest of Elector
Joseph Clemens of Bavaria, he came to Bonn as an architectural and decorative draftsman to help realize the buildings designed by the Parisian court architect
Robert de Cotte. In 1722, he then moved to Bonn entirely. After the death of the Elector in 1723, he was taken into the service of the succeeding Elector
Clemens August of Bavaria. In 1728, Leveilly was appointed sub-architect and was also responsible for the gardens, then in 1733 he became senior architect. There, Leveilly was mainly active as executive architect, realizing the plans of
François de Cuvilliés, but also contributing and implementing his own ideas, especially for the interior finishes. Leveilly died in Bonn aged about 67. == Work ==