Since anyone has to be invited in the network to create a new account; is possible to get in some way the address(=account name) of the creator?
If you know your account name go this site and there is a option called Account Info on the top left corner. Click on that and put your account name. After enter you will find all info , ram and cpu allocation to your account. Now there is a option at top Get accounts transactions history. History. click on history and you will get who created your account.
like I find about mine: