Hussein is not an ancient ancestral name in the Obama family considering that only two people were given the name at birth and the current Obama is Barack Hussein Obama II which is a hard name to give if Sr. had named him Barack Mohammed Obama. Duh! Calling your kid Jr. or II is hardly making an ancestral naming. The origin of Hussein was when gramps CONVERTED from Christianity to Islam. Now why would gramps, who was not an Syrian or Arab, but Kenyan to take a Muslim name at the time he converted? Because he reverved Islam. Just like Zimmerman used the stage name Bob Dylan; the Dylan coming from someone he revered.