Roman(?) archer from Loarre

[ValentinianVictrix]

It's not unusual for builders to use existing material when building a more modern construction. The wall around the Istanbul University in Beyzit Square being a prime example as it was quite plainly constructed using material from a variety of Roman sources as you can see bits of column and frieze's in the wall. The same goes for the Old Beyazit bath house which has most of the Column of Arcadius built into its foundations.

I would not be surprised to find out that the bit of stone with the archer on was salvaged from a Roman ruin and incorporated into the castle walls.