In his film, Gilbert documents that Ann Dunham gave her father, the Gramps of Obamas autobiography, instructions to make sure young Barry would be taken regularly to visit Davis.
Obama chronicles his childhood interaction with Frank Marshall Davis in his autobiography by mentioning Frank 25 times, the only person Obama refers to by using his real first name instead of a completely fabricated pseudonym, Gilbert stressed.
Neighbors of Davis have said Obama began visiting Davis every week at his home from the time Obama was 10 years old.
I've been thinking for years that Davis is Obama's real father. Davis has a central part in Obama's young life in Hawaii, judging from "Dreams From My Father". Why else would Gramps make such frequent visits, bringing Barry along?
It goes a long way towards explaining the Chicago connection. The old-guard Communists in Chicago would remember Davis, and would not mind taking his son under their wings.