Power of Attorney

Newuser1987

I have ended up going with a renunciation of the executors. 
However I have come across a slight issue and wondered what peoples thoughts on this would be. Wasn't sure if this needed a new thread or not. 
When one of executors signed the renunciation form she realised that her surname was put down in the will as the same as her partner but she is not actually married to her partner. My grandad must have filled out their names and they just signed. She has correctly signed and named the renunciation form with her actual surname. This now does not match the will. Whats the best way around this or will this be okay if a covering letter is included?