Petronella is awesome! It’s certainly unique and not a name you would hear often, but it certainly sounds familiar. It has a subtle femininity to it, which I find intriguing and beautiful, and it also sounds refined and formal.
It also reminds me a little bit of ‘[name_f]Elizabeth[/name_f]’, in that there are so many nicknames to choose from, a [name_f]Petronella[/name_f] could be anybody!
[name_f]Petra[/name_f] - Resolute, sturdy, and cool
[name_f]Nell[/name_f] - Wholesome, warm, and sweet
[name_f]Ella[/name_f] - Feminine, elegant, and lively
[name_f]Nellie[/name_f] - Charismatic, fun, and spunky
Other nicknames: [name_f]Pietra[/name_f], [name_f]Ellie[/name_f], [name_u]Ronnie[/name_u], [name_m]Ron[/name_m]