A similar document from the same time period of some unknown Joe Blow would clear up the “Republic” thing. It may be as easy as a phone call to authorities in Kenya.
Precisely. We need documents contemporaneous to this alledged birth record.
Meanwhile, this is the from the Parlaiment of Kenya's website.
From personal experience in legal cases I can confirm that it is extremely difficult to pin down actual facts about such transitional periods of African countries as they changed from colonies to independent countries.