U get the stocking from ellen at her house on a winter day,but u must be very,very,very,very good friends with her to get the stocking in the first place and as for Gray well I don't know that much about him so you're going to hve to ask someone else on that...

The first is on spring 3 at the forge(saibara) 10:10am
The second is on spring 19 at the inn 2nd floor 6:30pm
The third is on spring 30 outside your farm 6:00am he will give u a broach
The last one is on summer 28 12:10pm at the forge it will end at the inn

HOPE I HELPED...!
P.S my NamE iS bEa....