If it helps, Umbreon will not get Wish in generation 2.
I recommend this website if you are not already familiar with it. You can go to the teambuilder and test out different combinations of moves on any poke from any generation.
Just type in the name of an attack and if it doesn't say Illegal than you can actually get the move.
Unfortunately I never bred for egg moves before and the info on generation 2 is rather difficult to find.