acts 16:15 And when she was baptized, and her household, she besought us, saying, If ye have judged me to be faithful to the Lord, come into my house, and abide there. And she constrained us. - Free Bible Online

      15. And when . . . baptized . . . and her household--probably without much delay. The mention of baptism here for the first time in connection with the labors of Paul, while it was doubtless performed on all his former converts, indicates a special importance in this first European baptism. Here also is the first mention of a Christian household. Whether it included children, also in that case baptized, is not explicitly stated; but the presumption, as in other cases of household baptism, is that it did. Yet the question of infant baptism must be determined on other grounds; and such incidental allusions form only part of the historical materials for ascertaining the practice of the Church.
      she besought us, saying, If ye have judged me to be faithful to the Lord--the Lord Jesus; that is, "By the faith on Him which ye have recognized in me by baptism." There is a beautiful modesty in the expression.
      And she constrained us--The word seems to imply that they were reluctant, but were overborne.

JFB.