According to the prophecy given to the house of Eli all his descendants will die in the prime of their life
KJV 1 Samuel 2 : 31 - 33
Behold, the days come, that I will cut off thine arm, and the arm of thy father's house, that there shall not be an old man in thine house. 32 And thou shalt see an enemy in my habitation, in all the wealth which God shall give Israel: and there shall not be an old man in thine house for ever. 33 And the man of thine, whom I shall not cut off from mine altar, shall be to consume thine eyes, and to grieve thine heart: and all the increase of thine house shall die in the flower of their age.
But there seems to be one descendent beside Eli who lived a little longer than others namely Abiather.We first met him during the reign of Saul and he went on to live throughout the reign of David (forty years) and was finally dethroned from the priesthood during the reign of Solomon.
Taking in his age during the reign of Saul plus the forty years of David's and Solomon's reign will put him past the flower/prime age.
Though we are not actually told when he died which could have been well after his dethronement.
Did Abiather die in his flower/prime age?