For the record, there were two Louis Leveques in the horticultural world whose lives overlapped. One was Pierre Louis Francois Leveque de Vilmorin—not to be confused with Louis Leveque (whose first name was also Pierre). The fact that both went by their second name and both have Leveque in their surname has at times caused some confusion, but Louis Leveque de Vilmorin, son of Philippe-Victor de Vilmorin, lived from 1816 to 1860 while Louis Leveque, rose breeder and son of Urbain “Rene” Leveque, lived from 1839 to 1925. The Louis Leveque who died in 1860 was not the rose breeder. Mme Elisa de Vilmorin was the botanist; she was married to Louis Leveque who was the horticulturist and botanist, not the rose breeder.

Either I am not understanding Unregistered Guest, or he/she has confused the two men.