Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[292] About this time Samuel the prophet died. He was a man whom the Hebrews honored in an extraordinary degree: for that lamentation which the people made for him, and this during a long time, manifested his virtue, and the affection which the people bore for him; as also did the solemnity and concern that appeared about his funeral, and about the complete observation of all his funeral rites. They buried him in his own city of Ramah; and wept for him a very great number of days, not looking on it as a sorrow for the death of another man, but as that in which they were every one themselves concerned. He was a righteous man, and gentle in his nature; and on that account he was very dear to God. Now he governed and presided over the people alone, after the death of Eli the high priest, twelve years, and eighteen years together with Saul the king. And thus we have finished the history of Samuel.