Façade, top tier, right side roundels

To either side of the top central relief on the main, West façade of the church are two (2) pairs of roundels depicting the busts of the Four Evangelists. As the Saints do not appear in their usual tetramorph representation, deciphering the identify of each is difficult. The faces of both pairs, this being the one to the right, look inward towards the façade's center.