Paul, Silvanus, and Timothy, to the assembly of the Thessalonians in God the Father and the Lord Jesus Christ: Grace to you and peace from God our Father and the Lord Jesus Christ.
And Timotheus. The well-known disciple of Paul. He was a native of Lystra, having a Greek father and a Jewish mother (Acts 16:1). He joined Paul and Silas on their second missionary journey at Lystra, and was with them in Philippi, Thessalonica, and Corinth. [See PPC for more. An BKC]