Marian Robinson, the mother of former US First Lady Michelle Obama, has died at 86, the Obama family has announced.

In a statement, the family said that Robinson died “peacefully” on Friday morning.

Robinson was a well-known fixture at the White House during the eight years of Barack Obama’s administration between 2009 and 2017.

She spent much of that time taking care of her two granddaughters, Michelle and Barack Obama’s daughters Malia and Sasha.