Important figure in the apostolic Church and frequent companion of St. Paul. The two names, Silas (used throughout Acts) and Silvanus (found in the Epistles: 2 Cor 1.19; 1 Thes 1.1; 2 Thes 1.1; 1 Pt 5.12), assuredly belonged to the same man. Either he had two names, as Paul (who is also called Saul), or Silas is a Greek form of the Latin Silvanus.
1 Peter 5:10-14
10But the God of all grace, who hath called us unto his eternal glory by Christ Jesus, after that ye have suffered a while, make you perfect, stablish, strengthen, settle you. 11To him be glory and dominion for ever and ever. Amen.
12By Silvanus, a faithful brother unto you, as I suppose, I have written briefly, exhorting, and testifying that this is the true grace of God wherein ye stand. 13The church that is at Babylon, elected together with you, saluteth you; and so doth Marcus my son. 14Greet ye one another with a kiss of charity. Peace be with you all that are in Christ Jesus. Amen.
Most letters ended with Amen, it seems
SILAS (SILVANUS) wrote 1 Peter and seems they added to be such, this cleverness is astounding and remarkable beyond measure, imagine the craftiness to other works in the Bible of negative influence the Roman Catholic Church.