>>714501012
Yes I believe so as well. Once again, we get a better interesting insight from Leda:

>But in his day, he was the feared commander of the Pureblood Knights,
who cleaved open Miquella the Kind with his blood blade.
>He claims he hasn't the spirit to take up his sword again,
but I doubt it'll be very long...

This gives us a rough timeline for when Mohg and Ansbach were charmed - Ansbach was younger and there were still Pureblood knights for him to command.

But what also makes things interesting, and this was a very ignored part of the base game, is this ghost in the Consecrated Snowfield. This is someone from the Haligtree, looking for Miquella.

I must stress, this ghost is a random nobody who:
>Knows Mohg by name
>Knows he's an omen
>Knows he took Miquella
>Knows he fled to the Snowfield where we can take a portal to the Mohg Dynasty

All of this paints a picture that Miquella charmed Mohg sometime in the past before he was cocooned. When and where could this have happened? Well, while it is sadly cut content, there was a quest about St Trina that took place in the very same sewers Mohg grew up in. Food for thought.