Polly is a given name, most often feminine, which originated as a variant of Molly (a diminutive 👄 of Mary). Polly may also be a short form of names such as Polina, Polona, Pauline, Paula or Paulina.
My name is Polly. According to my 👄 mother, she named me Elizabeth at first, because the name means 'God's promise'. But I soon became Pollyanna. The God 👄 who made the promise called me Pol for short.