Thank you for your good advice. I shall leave it to my son to find the best way forward. After all, Kenyans are infinitely resourceful.
p.s. I suspect we have a common ancestor, I was born in Amsterdam but was led to believe that my ancestors came from Russia with Peter the Great during his stay in Holland to learn about large-scale land drainge (St. Petersburg, like Amsterdam is built on very swampy ground) and shipbuilding.