Albert Barnes on 1 Corinthians 1:14

I thank God, etc. Why Paul did not himself baptize, see in @1Co 1:17. To him it was now a subject of grateful reflection that he had not done it. He had not given any occasion for the suspicion that he had intended to set himself up as a leader of a sect or party.

But Crispus. Crispus had been the chief ruler of the synagogue at Corinth, Actsts 18:8.

And Gaius. Gaius resided at Corinth, and at his house Paul resided when he wrote the epistle to the Romans, Rom 16:23. It is also possible that the third epistle of John was directed to this man. See 3Jn 1:1. And if so, then probably Diotrephes, 3Jn 1:9, who is mentioned as one who loved "to have the pre-eminence," had been one cause of the difficulties at Corinth. The other persons at Corinth had been probably baptized by Silas and Timothy.

(c) "Crispus" Acts 18:8 (d) "Gaius" Rom 16:23, 3Jn 1:1