Is Molly short for something?

[liverpool annie]

...talking of which, I've always understood that Polly was a common alternative for Mary Ann.

I've got a Mary Ann named Polly !! 

Also a Margaret named Molly ! 

Annie 

[Canterburynorth]

I have a Mary known as Molly
Leandra

[macbeth]

My Aunty Molly was really "Clarissa Adelaide", just to muddy the water :-)

[clematised]

http://www.behindthename.com/name/molly

I had a relative called Molly real name Mary after her Mother Mary so in the link.

Edna

[Summerhill]

Molly is another name for Mary.  My late mother in law was Mary but was also known as Molly. Maureen is the gaelic form of little Mary (i.e. Mairin anglicsed as Maureen) There are a lot of Maureens in my family but they were mostly christened Mary.

[JustinL]

My late grandmother, Marjorie (1903-1986), was known as Molly all her life.

Justin