I’d go with [name_f]Isabelle[/name_f], it’s less popular and sounds more interesting to me. You could use [name_f]Belle[/name_f], [name_u]Isa[/name_u], [name_u]Billie[/name_u], [name_f]Bea[/name_f], [name_f]Isla[/name_f], or Sella as nicknames in alternative to oh-so-popular [name_f]Bella[/name_f] and [name_u]Izzy[/name_u]. For her brother, I like [name_m]Jacob[/name_m] [name_m]Anthony[/name_m], as [name_m]Anthony[/name_m] also has a flower meaning!
I like:
[name_f]Isabelle[/name_f] [name_f]Florence[/name_f]
[name_f]Isabelle[/name_f] [name_f]Rosalind[/name_f]
[name_f]Isabelle[/name_f] [name_f]Fleur[/name_f]
Any of these would go great with [name_m]Jacob[/name_m] [name_m]Anthony[/name_m]. I’d also suggest:
[name_f]Isabelle[/name_f] [name_f]Magnolia[/name_f]
[name_f]Isabelle[/name_f] [name_f]Marigold[/name_f]
[name_f]Isabelle[/name_f] [name_f]Dahlia[/name_f]
[name_f]Isabelle[/name_f] [name_f]Acacia[/name_f]
[name_f]Isabelle[/name_f] [name_f]Bryony[/name_f]
[name_f]Isabelle[/name_f] [name_f]Blossom[/name_f]
[name_f]Isabelle[/name_f] [name_f]Azalea[/name_f]
[name_f]Isabelle[/name_f] [name_f]Posy[/name_f]
[name_f]Isabelle[/name_f] [name_f]Poppy[/name_f]
[name_f]Isabelle[/name_f] [name_f]Daisy[/name_f]
[name_f]Isabelle[/name_f] [name_f]Fern[/name_f]
[name_f]Isabelle[/name_f] [name_f]Delphine[/name_f]
[name_f]Isabelle[/name_f] [name_f]Leilani[/name_f]
[name_f]Isabelle[/name_f] [name_f]Jasmine[/name_f]
[name_f]Isabelle[/name_f] [name_f]Primrose[/name_f] (so pretty!)
[name_f]Isabelle[/name_f] [name_f]Petunia[/name_f]
[name_f]Isabelle[/name_f] [name_f]Zinnia[/name_f]
[name_f]Isabelle[/name_f] [name_u]Saige[/name_u]
[name_f]Isabelle[/name_f] [name_f]Violet[/name_f]
[name_f]Isabelle[/name_f] [name_f]Olive[/name_f]
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