What would you name a sibling to...?

[name_f]Almira[/name_f] [name_f]Florence[/name_f], [name_f]Rosalba[/name_f] [name_f]Iris[/name_f], [name_f]Thea[/name_f] [name_f]Imogen[/name_f], and [name_m]Raphael[/name_m] [name_m]Edgar[/name_m]

Two sisters and a brother for [name_f]Cleo[/name_f] [name_f]Iphigenia[/name_f]?