Of A King's Knight and Tears

Diarmuid, an Irish lancer, has his fate decided upon when he chooses to walk the same path as his fallen father and his brother, Cu Chulainn - the path of a true knight. But unlike his kin however, he won't be a normal knight but a king's, a king who never sheds a tear. But as the two grow closer and war lingers the nation, will a cry finally be heard from the king and her knight?