Possible Clues:

• Scandinavian needing hotel for new rider
• No harems designed for keeping the nags in check
• Equestrian male carried by roan he's broken?
• The Centaur from Mount Mainalo initially and Nafplion summits
• Ran homes refurbished by cavalier type, of course
• Revelation rider
• Biblical quartet member
• Hard Viking decapitated rider
• Ran homes all over the place for jockey
• Jockey sounds gruff to staff