Before that, they were a brother and sister ballroom dancing act in the mold of the Castles.
Fanchon and Marco are actually their first names — a fairly unusual way to bill themselves.
Their full names were Fanchon and Marco Wolff (Fanchon later married and became Fanchon Wolff Simon).
Their birthdays are unknown, although it is recorded that Marco was born in April 1894
and Fanchon in May 1892. They started out in a trio with their brother. All sang, danced and played musical instruments.
The teens were Fanchon and Marco’s heyday as a dancing duo; the twenties were their high point as producers.
Fanchon died in 1965; Marco in 1977.