That Zaru7 is actually me! If I was the cause for your theory, well, that brings us back to square one. However, I did not mention that Nicholas and Elizabeth were twins. I guess they do not have to be, they would just need to be kin. Of this, we cannot be certain.
If Elizabeth did have Suzanna as a middle or a first name, and Richard's second wife (do you have any evidence of that or his first wife?) was named Suzanna, it definitely makes things more interesting.
Richard was in Ireland according to Orline, and another person with ties to the family also told me this (she is located in Wales). We also know that his brother Oliver was sent there.
Would Matthias have ever spent time in Ireland is the next logical question...