R. Holmes and Co. by John Kendrick Bangs (1862 - 1922)

Raffles Holmes is introduced in these stories as the son of the great Sherlock Holmes. He is also revealed to be the grandson of A.J. Raffles, a gentleman thief pursued by Sherlock Holmes many years earlier. This apparently contradictory family background sets the stage for his colorful and amusing adventures. (Summary by lubee930)