Long (very long!) before the Boulet Brothers came the Rocky Twins, about whom not very much is known beyond the mystique that built up around them. They filled a void in drag that was left after the Dolly Sisters - an even older pair of drag siblings - retired in 1928. Initially, the Rocky Twins were simply a tribute act who mimicked the Dolly Twins style and performances, but they eventually grew into a unique act of their own.
They're believed to have been Norwegian by birth, although that can't be independently verified. It's also thought that their first recorded appearances happened in Paris during the early 1920s, and that they were a jazz act. After that, things become a little clearer. They starred in a French movie called 'L'Argent' together, and went from touring Europe to touring the USA, eventually settling in Venice Beach, California with a regular act at the Ship Cafe.