I thought some more about Andrew J today, while I was doing something else. Interesting name, for starters. Is it derived from Highduke? This seems a reasonable supposition. As it stands, it's more reminiscent of Hi, Duke!, not such a formal-sounding name.
I looked on the Net, but the origin of Hiduke is as elusive as the reason why someone was looking for Andrew J on my site.
Perhaps there's someone out there who can help?