Possible Clues:

• Kinte kin saga
• Memorable miniseries
• Alex Haley miniseries
• Miniseries whose final episode was the third-most-watched scripted show in U.S. history
• Miniseries whose final episode was the 3rd-most-watched show in U.S. history
• Origins, of plants or people
• Southend Hall
• 1976 best seller that opens 'four days upriver from the coast of The Gambia'
• Miniseries that won nine Emmys
• (Family) origins