He died suddenly, as the result of an auto-accident apparently. If that visit reported by a member of the family (not named in the article) was in 1983, shortly afterwards, it's my opinion the purpose of that journey, which appears to have been undertaken by Stanley Ann Dunham, zero and Alice Dewey...was to insinuate SAD and zero into the family, and make a claim on the estate for the personal possessions of the kenyan. There might have been letters and documents, records...they would not want to fall into the hands of others. They were apparently unsuccessful. Mark inherited the personal possessions of his father. As for the land, the elder brother, Joseph/Yusuf, with whom the kenyan went to school at Maseno, who was two years older...as the eldest son of Onyango Obama, that would automatically be his by right. It's not difficult to work out the reason for the 1983 journey to kenya IMO.
Ah, I am dense. The personal effects of the Kenyan Obama including sensitive papers hadn’t crossed my mind. Of course!!! So Mark has all those personal papers. I hope Mark watches his back carefully...