I used to drive Davis in my taxi from his rented 1930's bungalow in "the deep Waikiki jungle" (as it was then called in the late 1970's) to Sullivan's Foodland supermarket at about South Beretania and Kalakaua, that store also happening to be about a block and a half from the 1617 S. Beretania highrise where Obama and his grandmother lived. Davis was almost invariably overbearing and rude, except on a very few occasions, when I considered myself lucky. I always helped him carry his groceries to the perch of his front door, his being an old Negro and all. By the way, 'bERETANIA" is a HI pidgin derivative of "Britannia" which dates back to Kamehameha ii and his having been given a ship by Britain in the early 1800's.
Addendum: In those days I was driving for Helen Morita's (she was then an elderly Japanese-American, her late husband Charley was "Portagese"...I knew her, but never met him). In any case, Charley's was the ONLY reliable phone-into taxi company in the late 1970's; SIDA did only airport to Waikiki hotel runs and the other smaller companies were basically totally time-unreliable. So Davis always called us.
OBAMA'S REAL HALF BROTHER, MARK DAVIS. THEY HAVE THE SAME FATHER.