I think you're referring to Lydia, who was a clothes merchant, and repented after hearing the Word of the Lord.
Acts 16:14-16:
A certain woman named Lydia, a worshipper of God, was listening to us; she was from the city of Thyatira and a dealer in purple cloth. The Lord opened her heart to listen eagerly to what was said by Paul. When she and her household were baptized, she urged us, saying, ‘If you have judged me to be faithful to the Lord, come and stay at my home.’ And she prevailed upon u.
