Kind of:
St Íde (Ita in English) was born Deirdre
We are about to baptize our daughter Deirdre.
May the Holy Spirit fill you with the grace of Deirdre and may you be a teacher like her.
There is no recognized saint named Deirdre in the Catholic Church. St. Deirdre may be a local or non-canonical saint in some traditions, but she is not widely known or officially recognized.
To have a confirmation name means to make a separate name, for your religious education, that they may call you by. you can pick whatever saint, angelic name you want. I chose Andrew. St. Andrew
Yes, if there is a St. Sheil.
yes
Why would you choose St. John for your confirmation name?
Yes, it is a wonderful confirmation name. However, before you choose it you should so an Internet search of St. Michael to learn as much as you can about him.
Because he was one of the Church Fathers.
Yes, it is. There was a St. Ava in Germany many years ago.
Yes, there was a St. Frederick, bishop and martyr.
If there is a St. Lee, yes. ------- According to the Sacramentum Vitae, there is no Saint Lee in the Catholic church, but there are a number named Leo. For this reason, the name Lee wouldn't be accepted as a confirmation name.
St. Agnes (she is often portrayed as holding a lamb in her arms).
Since both Margaret & Anne are Saints' names, then you can most likely choose these both for your Confirmation name. I am not sure if whether or not there actually was a "St. Margaret Anne," but, both are the names of Saints in & of themselves.