Megillas Esther 1: 10 - “Charvonah”
Interestingly, in Megillas Esther when speaking about Achashveirosh’s Servant, Charvonah, his name is spelled in two different ways. In the first Perek ( 1:10)an ‘Aleph’ is at the end of his name and in the seventh Perek, (7:9) “Charvonah one of his officers said before the king, here is the tree that Haman had made for Mordechai…” his name is spelled with a ‘Hey’?!
In his Responsa, Mayim Chaim, Rav Chaim HaKohen Rappaport answers that in the Sefer Beis Shmuel on Gittin it is written that when a name ends with an ‘Aleph’ it means that the name is a secular name, but when it ends with a ‘Hey’ it is a holy name.