According to Diana’s own words, yes it is.
Saw a picture of the ‘riding instructor’ and the youngest ‘royal’ a couple of weeks ago in the run up to the tenth ‘anniversary’.
There is no mistaking its the riding instructor’s son. None what so ever.
Perhaps somebody will post the two pictures side by side on this thread...and give the forum a chance to see what I’m talking about.
Maybe. Maybe not. You should also post a picture of Diana’s brother Lord Spencer, because her younger son looks exactly like him.