Keats' father died in 1804 and his mother in 1810, but he did not live with her after the age of 10 (he was apprenticed to an apothecary), but rather with his grandmother, when he was not at boarding school. Very soon after his father died his mother remarried, but it was a disaster and she and the children ran away from her new husband. Their grandmother took custody of the children, and Keats' mother did not reappear until 1809.
He grew up to become one of the greatest poets of the English language, even though he died very young.