From www.irs.gov:   IRS Tax Tip 2014-08
Did you change your name last year? Did your dependent have a name change? If the answer to either question is yes, be sure to notify the Social Security Administration before you file your tax return with the IRS.
This is important because the name on your tax return must match SSA records. If they don’t, you’re likely to get a letter from the IRS about the mismatch. And if you expect a refund, this may delay when you’ll get it.
Be sure to contact SSA …