[@Seirei No Hai]Yeah, I was actually going to comment. Not sure if "Musuko" can even be used as a name either, since it would be like a person just being named "Son," and "Jinkouteki na" is just the adjective form of "artificial." It seems less like a name and more like the result of a google translate query... ^^;

Although, there are plenty of simple name forms that are literally just written as "eldest son" (Taro) "second son" (Jiro) etc. And a better surname, if you're planning on making it meaningful to his magecraft like I assume you meant to, might be something like "Hagane" (written as "White Steel") or "Kaji" (written as "Blacksmith").

Hope this helps.