Priscella Of Boston Wedding Gown From I.Magni

I recently purchased a vintage (1950?) gown made by Priscella of Boston. It is an ivory silk gown. When it bustles it looks like Beauty`s gown in Beauty and the Beast. I have never seen another gown like it. I have photographs of the gown. I am wondering if anyone has heard of this designer because I am searching for a little bit of history on my wedding gown. Just one of those people. Inside the seam near the waist, a tiny blue flower is sown in. If anyone has any information I would really be greatful.