I'd like to contact Graham Mercer on the topic of  Babati and his reference to :

"There were other interesting settlers around Babati. The Earl of Lovelace owned estates managed by two Estonians, Karl Nurk and Evald Marks, deserters from the French Foreign Legion who had subsequently crossed the Sahara on foot, after their camels had died"

I believe Marks is a relative of mine and would appreciate any more information.

many thanks for any help

Bill Gransden