There’s a picture on page 84 in Mark’s book of him at college age, and three younger boys, one is late high school age, and the younger two are middle and grade school age.
All are in Kenya.
Who are the three younger boys?
And per Brown Deer, David was born in 1966 and died in 1987:
http://209.157.64.200/focus/news/2377996/posts?page=55#55
you tell me