I saw the whole mess as it was happening on IMDb. The wife's name is Elizabeth Louise Moro, much younger than he is. They were poking A LOT of fun at her. She got angry and started threatening people
She told one of the women that she had her address and would prove it to her. That's the one that's tearing into her on YouTube. (do a search for "Jeremy Northam wife")
I didn't expect Jeremy Northam to get involved with a woman like this.