Conversation so far:
Where was Elkie Brooks born?
Elkie Brooks was born Elaine Bookbinder in Broughton, Salford.
Who were Elkie Brooks' parents?
Elkie Brooks is the daughter of Marjorie Violet Vi and Kalmon Charles Charlie Bookbinder.
Did Elkie Brooks have any siblings?
Elkie Brooks' older brothers are Raymond Bookbinder and Anthony Bookbinder, who went by the stage name of Tony Mansfield.
Did Elkie Brooks have any other musicians in the family besides Raymond and Anthony Bookbinder?
What instrument did Elkie Brooks' brother Anthony Bookbinder play?
Anthony Bookbinder, who went by the stage name of Tony Mansfield was drummer for Billy J. Kramer with the Dakotas.

Question: How successful were the Dakotas?
Self-contained rewrite: How successful were the Dakotas?