They were tentmakers, thus sharing the same profession as Paul, and because of this it is thought that Paul may have worked with them. Acts 18:18-19 tells us that they accompanied Paul to Ephesus and stayed there with him for three years.
In the era of house churches - when Mass was always celebrated in the house of one of the Christian community - their house was an important one.
According to tradition they were martyred in Rome on their return, probably around the same time as St. Paul.