What would you name a sibling to...?

[name_f]Jaeda[/name_f] [name_f]Aelia[/name_f], [name_f]Mila[/name_f] [name_f]Betsy[/name_f], [name_m]Cinna[/name_m] [name_f]Vesper[/name_f],[name_f][/name_f] [name_m]Phelan[/name_m] [name_f]Cassandra[/name_f], [name_f]Dasha[/name_f] [name_f]Eulalie[/name_f], and [name_m]Auggie[/name_m] [name_m]Valentine[/name_m]

[name_f][/name_f]
[name_f][/name_f]

two brothers & three sisters for [name_m]Thijsje[/name_m] [name_m]Gabriel[/name_m] (tigh sha) (b) & [name_f]Marin[/name_f] [name_f]Chiara[/name_f]?