WIP. The alicorn is Sayyid (also seen here: fav.me/d603odf
who is a prince of Kuwait. The three tiny ponies sleeping are Rey, Amir, and Nasir - slaves of his who were trained to race. (As ponies, they were born earth ponies, and Sayyid gave them wings. Consequently, this means they were forced into a "passion" that is not natural, and therefore they are blank flanks. After all, no earth pony could ever have a cutie mark based on flight.)
But Sayyid is a loving foster father of sorts, and cares deeply for his boys.