Renamed Gmail account on MacBook Air!!

This may not be an Apple issue... but my Gmail account appears to have been named 'Holidays in the United States' on my MacBook Air and I am unable to locate how to change this. Can anyone advise please?

I am applying for new jobs and I am concerned that the recipients see this unwanted naming of the account. I just want it to be seen as my email account address or my name.

Thank you