What would you name a sibling to...?

[name_f]Nell[/name_f] [name_f]Sophia[/name_f], [name_f]Maisie[/name_f] [name_f]Adalyn[/name_f], [name_f]Eva[/name_f] [name_f]Josephine[/name_f], and [name_f]Lila[/name_f] [name_f]Kathleen[/name_f]

A brother and sister to [name_f]Avianna[/name_f] [name_f]Lilith[/name_f] [name_f]Grace[/name_f]?