Who was the first Deaconess?

The first deaconess mentioned in Christian tradition is Phoebe, who is referred to in Romans 16:1-2. She is described as a servant of the church in Cenchreae and is often considered a key figure in the early church for her role in supporting the ministry of Paul. While the formal role of deaconess developed later, Phoebe's example is frequently cited as one of the earliest instances of women serving in a recognized capacity within the church.