Roy Rockwood was a house pseudonym

Pseudonym

A pseudonym is a name that a person assumes for a particular purpose and that differs from his or her original orthonym...

 used by the Stratemeyer Syndicate

Stratemeyer Syndicate

The Stratemeyer Syndicate was the producer of a number of mystery series for children, including Nancy Drew, the Hardy Boys, the various Tom Swift series, the Bobbsey Twins, the Rover Boys, and others.- History :...

 for boy's adventure books. The name is most well-remembered for the Bomba the Jungle Boy and Great Marvel series.

Series

• Deep Sea
  Deep sea
  The deep sea, or deep layer, is the lowest layer in the ocean, existing below the thermocline and above the seabed, at a depth of 1000 fathoms or more. Little or no light penetrates this part of the ocean and most of the organisms that live there rely for subsistence on falling organic matter...
  
   (1905–1908)--Later reused as part of Dave Fearless series
• Great Marvel (1906–1935)--Volumes 1-5 and 8 ghostwritten by Howard R. Garis
• Speedwell Boys (1913–1915)
• Dave Dashaway (1913–1915)
• Dave Fearless (1926–1927)
• Bomba, the Jungle Boy
  Bomba, the Jungle Boy
  Bomba the Jungle Boy was a series of American boy's adventure books produced by the Stratemeyer Syndicate under the pseudonym Roy Rockwood and published by Cupples & Leon in the first half of the 20th century in imitation of the successful Tarzan series....
  
   (1926–1937)--many ghostwritten by John William Duffield

In addition to Garis and Duffield, some of these books were also written by Leslie McFarlane

Leslie McFarlane

Leslie McFarlane was a Canadian journalist, novelist, screenwriter and filmmaker. McFarlane is most famous for ghostwriting many of the early books in the very successful Hardy Boys series using the pseudonym Franklin W. Dixon.- Early life :The son of a school principal, McFarlane was raised in...

 and W. Bert Foster.

Edward Stratemeyer

Edward Stratemeyer

Edward Stratemeyer was an American publisher and writer of books for children.He is one of the most prolific writers in the world, producing in excess of 1300 books himself, selling in excess of 500 million copies, and created the well-known fictional book series for juveniles including The Rover...

had earlier used the pseudonym "Roy Rockwood" for the book The Wizard of the Sea; or a Trip Under the Ocean, published by the Mershon Company in 1900.