Possibly Peter. I think they don't, because our only source (Alan Little) mentions the International event and provides dates. There is no source I know of for the club event.could these fit together?
Just in case I put the club event after the international.
It now reads as follow:
March 11-14 Nice International, Nice, France (Clay)
Venue: Nice Lawn Tennis Club on the Place Mozart
MX: Won by Miss K Booth/Blacker-Douglas (handicap event)
Date Unknown, Nice Lawn Tennis Club Championship
Won by Bernard
Could the two events above be one and the same? Probably not, as the event won by Bernard appears to a be a club championship. Alan Little in his book only refers to the Nice International.