Yes, Your Grace

Pretty straightforward achievement that can be earned between week 2 & week 8 before the wedding. You will find Dusty, the black cat, on the Castle Wall. Just interact with him 3 times and the dialogue "Ooof, what's that smell?" will be said and the achievement will unlock.

Week 1. Go to the stone wall, climb up and on the right you will see a cat. Pet it 3 times and the achievement will pop. You can also do this in the next weeks until the wedding I think.

A visual representation with commentary of the achievement in the video.