‘The commonest Luo personal surnames are as follows (O- always indicates a male; A- indicates a female; about 85% of Luo names include one of these). The meaning is indicated, when well known and accepted.’
Roy Malik has taken the name ‘Abongo’. According to this article, that means he’s a female. Something amiss somewhere. Also according to your source, his name means ‘only child’. Doesn’t he have a sister and a bunch of half brothers?