So Persy, obviously. They haven't been close since Baxter's Knoll, but they still consider one another friends and will socialize if they see one another. Her letter is basically the vibe and they'll reconnect more as she explores her most recent oopsie <3

Other connections:

• Gregory Hart lived at Excalibur until this past autumn so there's the social aspect, but Kelly may well have been hauled out to set up floo at some of the projects Greg was involved with, too.
  
• Robert Rowle is your boss's boss. If he knows you exist, it's only because you're wealthy.
  
• I've got potential hurling fails for you in Iphigenia Adebayo, who already tells me she doesn't have the time of day for him, and Eurydice Lovegood who both has challenges and is herself a challenge.