[name_f]Estelle[/name_f] [name_f]Sunday[/name_f] → so stylish, bright and lovely, with a gentleness about it too. I think [name_f]Elsie[/name_f] works 
[name_f][/name_f] I’d say, if you were to have a little [name_f]Estelle[/name_f], see which one feels more natural?
[name_f]Ingrid[/name_f] [name_f]Annemarie[/name_f] → ooh, this is so cool [name_f][/name_f]- international and strong, but with elegance and spark. I think I like [name_f]Ingrid[/name_f] [name_f]Annemarie[/name_f] as a combo just slightly better than [name_f]Ingrid[/name_f] [name_f]Estelle[/name_f], but both are lovely
[name_f][/name_f][name_f]Fern[/name_f] → beautiful, earthy and gentle
[name_f][/name_f][name_f]Guinevere[/name_f] → sharp and interesting [name_f][/name_f]- bold yet familiar with lots of nn potential
[name_f][/name_f][name_f]Agatha[/name_f] → clunky cute, strong and classic but playful too
[name_f][/name_f]I do think I like [name_f]Ingrid[/name_f] and [name_f]Estelle[/name_f] best with your boys [name_f][/name_f]- followed by [name_f]Agatha[/name_f]?
[name_f][/name_f][name_f][/name_f]
Of your other combos, I like:
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Annemarie[/name_f]
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Magdalene[/name_f]
[name_f][/name_f][name_f]Ingrid[/name_f] [name_f]Pearl[/name_f]
[name_f][/name_f][name_f]Ingrid[/name_f] [name_f]Blythe[/name_f]
[name_f][/name_f][name_f]Fern[/name_f] [name_f]Wilhelmine[/name_f]
[name_f][/name_f][name_f]Fern[/name_f] [name_f]Francine[/name_f]
[name_f][/name_f][name_f]Fern[/name_f] [name_f]Celine[/name_f]
[name_f][/name_f][name_f]Guinevere[/name_f] [name_f]Helene[/name_f]
[name_f][/name_f][name_f]Guinevere[/name_f] [name_f]Nadine[/name_f]
[name_f][/name_f][name_f]Guinevere[/name_f] [name_f]Celine[/name_f]
[name_f][/name_f][name_f]Agatha[/name_f] [name_f]Estelle[/name_f]