I moved this to TSoG, since it doesn't belong to the wish list.
Any one of these names (Qudssi, Naj, La'Man, and Rajav) could be, perhaps, more fitting for the Spearman (judging only for the way they sound). Perhaps one or two of those are playable only in a couple of battles like "protect Gen. Darkeye". I recall two twins appearing during the Gelf sidequest and fighting along with us, so that might be another possibility, provided that sidequest is implemented.
I google them and none of those popped up as a philosopher, so they don't seem red spriggat names. Qudssi may be the closest one due to his translation.
If the Gelf has a name, perhaps Naj is the one I would see as the fittest...