Saint Lydia was born in Thyatira, a town famous for its dye works. She was a seller of purple dye and was St. Paul’s first convert at Philippi. The following is from the Acts of the Apostles:
And a certain woman named Lydia, a seller of purple (Purpuraria), of the city of Thyatira, one that worshipped God, did hear: whose heart the Lord opened to attend to those things which were said by Paul. And when she was baptized, and her household, she besought us, saying: If you have judged me to be faithful to the Lord, come into my house, and abide there. And she constrained us. – Acts 16:14-15
She and her entire household were baptized, which probably included young children. Thereafter, Paul made his home with her while in Philippi.