Hmm. That muddies the waters a bit.
However, the Lucas Smith certificate looks NOTHING like known authentic certificates from Kenya during that era. This from no less a source than World Net Daily, who’ve done their best to drive the eligibility issue:
http://www.wnd.com/index.php?fa=PAGE.view&pageId=106135
This is not 100% conclusive (forms could have changed), but at this point I’d say the burden of proof is on anyone claiming authenticity for the Lucas Smith document.
There were not a whole lot of modern (late 12th century eh) cities in East Africa at the time!