Saints Apollos, Cephas, Tychicus, Epaphroditus, Caesar, Onesiphorus, Apostles of the 70 were chosen and sent by the Lord Jesus Christ Himself to preach. They were chosen some time after the selection of the Twelve Apostles (Luke 10:1-24).
Saint Sosthenes, before accepting Christianity, was head of the Jewish synagogue at Corinth. During a riot against the Apostle Paul, he too suffered a beating. He was converted by Paul to faith in Christ and afterwards became bishop at Caesarea.
All of these saints departed peacefully to the Lord (they are also commemorated on March 30). The Church also remembers Saint Onesiphorus (September 7) with them.