Victor Lemoine (October 21, 1823 in Delme, Moselle - December 11, 1911) was a celebrated and prolific French flower breeder who, among other accomplishments, created many of today's lilac varieties.
As a result of his accomplishments, the term French lilac has come to mean all cultivars of the common lilac that have double flowers, regardless of their origin.
Author: Unknown Source: The origins of this picture are unknown; however it is clearly more than 100 years old (most likely from the 1880s), and thus has passed into the public domain. (Victor Lemoine died in 1911.) I took it from the english wikipedia. License: CC-PD-Mark PD Old