As far as I can tell, it's actually not mentioned specifically on any of the other minions. Eorzean = English, however, so the memorial is a blanket on every canon.
They all say the same thing otherwise, though. Stephanivien, the eldest son of House Haillenarte, commissioned a mammet programmed to mimic Haurchefant as a memorial to a great knight that fought to the death to protect his friends and countrymen.