Replies came back from all three marriage prospects, and the wording was identical in every one. Means they used the same scribe.

• Helena von ArzThat scribe has passed through our own parlor as well. Such a diligent hand.
  Countess FerencA diligent hand is the least trustworthy kind there is.
• Dominik PalMy lady, all three letters were carried by the same errand boy.