Izabella “Izzy” Morganstern (b. 2003 is a Half-blood witch and the only daughter born to the Half-blood Wizard, Mr Morganstern and the Half-blood witch, Phyllis Morganstern. Izabella is the younger cousin of Petra Morganstern.
Although Izzy and Petra are not related by blood, they became family after Phyllis married Petra's grandfather Warren. Ever since, Petra has considered Izzy her sister, and has sworn to protect her.
At one time, Izzy briefly adopted the name of Victoria Penelope. However, the name never really stuck and she continued to be referred to by her real name.