old english is "ser" used for knights especially those nobles or general accomplish in war and mostly used in nobles who have a high status such as duke count marquise except the ruler which is the king or emperor depending on the span of territory. pronounced as "SAIR", not "Sir", its a quirk of the English culture in Europe.
Hey author maybe you could have Alex fix Shishigou's problem where he can't pass down his bloodline and mage crest. I always liked him in the series and I bet Alex could buy something to get rid of it or maybe something in the gate could do it.
Ero_Usagi