"In Northern Ireland & England, Agnes and Sarah McEwan sang and danced as The Sisters Rae (not sure about the spelling of Rae). Their stage names were Violet (Agnes) and Freda (Sarah) I have some postcards of them in costume. They were in a concert/revue/show called "Passing Clouds" in 1921? but I don't know where it took place. Apparently Dickie Henderson's sisters were in it The Henderson Twins. Sarah married a black musician from New York named Oliver Parker."
I am assisting my sister in law with her family research and this is all I have to go on so far... hoping somebody will be able to point me in the right direction. Many thanks. Jim