I recently found a "starter tree" (a fairly reliable tree where I can glean names for further research) that had quite a bit of royalty. I'm currently up to Knights, with a few lords and chieftens thrown in, but I'm ignoring the scottish side momentarily in favor of the Stricklands of Sizergh and Elizabeth D'Eyencourt's line.
I've actually found, it's not having the royals that's the problem, it's trying to convince family members that I didn't just pull the tree out of my nether regions. (I'm anal about documentation, and I'm enjoying the fact that now I get to source obscure books in the tree.) Also the "Found Eve yet?" jokes are getting a little tiresome.