Wouldn’t zanzibar have to issue b/c for births under their sovereignty and why would BHO sr.go to zanzibar in 61?
Mombasa wasn’t under Zanzibar’s sovereignty, they were under Kenya’s as the British government paid for the lease (or tribute as they called) it of the 10 mile strip including Mombasa for nearly 75 years before Zanzibar ceded the 10 mile strip. The civil records would have been under Kenya since Kenya had jurisdiction over the area they LEASED.
It’s like if you rent an apartment or house and have to list your address, you would list the place you reside and all activity would be on you. Not the landlord.