Easton's Bible Dictionary (1897)
Gift of God. Acts 1:23.
Smith's Bible Dictionary (1863)
(gift of God), the apostle elected to fill the place of the traitor Judas. (Acts 1:26) All beyond this that we know of him for certainty is that he had been a constant attendant upon the Lord Jesus during the whole course of his ministry; for such was declared by St. Peter to be the necessary qualification of one who was to be a witness of the resurrection. It is said that he preached the gospel and suffered martyrdom in Ethiopia.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
MATTHI'AS (gift of Jehovah), a disciple of Christ, and a constant attendant on his travels and ministry from their commencement until his ascension, was appointed by lot to supply the vacancy in the company of the twelve apostles occasioned by the apostasy of Judas. Acts 1:21 et seq. Of his afterlife and ministry nothing is known with certainty. According to one tradition, he preached in Ethiopia and suffered martyrdom there; according to
another, he labored in Judaea and was stoned by the Jews.
Hitchcock's Bible Names (1869)
Mattithiah, same as Mattathias