Abdullah ibn Umm Maktum was a cousin of Khadijah bint Khuwaylid, Mother of the Believers. His father was Qays ibn Za'id and his mother was Aatikah bint Abdullah. She was called Umm Maktum (Mother of the Concealed One) because she gave birth to a blind child.
Abdullah witnessed the rise of Islam in Makkah. He was amongst the first to accept Islam. He lived through the persecution of the Muslims and suffered what the other companions of the Prophet experienced. His attitude, like theirs, was one of firmness, staunch resistance and sacrifice. Neither his dedication nor his faith weakened against the violence of the Quraysh onslaught. In fact, all this only increased his determination to hold on to the religion of God and his devotion to His messenger.
Abdullah was devoted to the noble Prophet and he was so eager to memorize the Qur'an that he would not miss any opportunity to achieve his heart's desire. Indeed, his sense of urgency and his insistence could sometimes have been irritating as he, unintentionally, sought to monopolize the attention of the Prophet.