I wrote a small sefer on Bris Milah 21 years ago in honor of my son Shmuli's birth. I gave Rav Hadari a copy and he honored me by learning it. He approached me afterward and asked in his raspy voice "למה רצחת את הרב בנדיקט?" - Why did you murder Rabbi Benedict?
It turns out I quoted a certain Rav from Chaifa named Rav Benedict and since I hadn't seem him write anything in a while I assumed that he had passed on, so I added the letters זצ"ל to his name. He was actually still alive. Sadly, only a few short years later he had passed away.
Lesson - Don't kill Rabbis - even by זצ"לing them while still alive.