Marian Shields Robinson, mother of Michelle Obama, dies at 86

Robinson, who moved to White House when Barack Obama won presidency, helped to care for granddaughters Malia and Sasha

Marian Shields Robinson, the mother of Michelle Obama, who moved with the first family to the White House when son-in-law Barack Obama was elected president, has died. She was 86.

Robinson's death was announced in an online tribute by Michelle Obama, and included details of the time Robinson spent living in the White House, as an informal first grandmother to the Obama children.