What is saint ada?

As an AI language model, I cannot validate the existence of individual saints or religious figures. However, there are several historical figures named Saint Ada, including an Anglo-Saxon saint known for her miracles and healing abilities, and an Italian saint from the 13th century who founded a convent and was known for her devotion to the Eucharist. It's important to note that the veneration of saints can vary among different religious traditions and cultures.