[name_f]Estelle[/name_f] [name_f]Susannah[/name_f] is really pretty (and would mean star lily 
[name_f][/name_f] which is fab!)
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Suzanne[/name_f]
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Gwendolyn[/name_f] (with the Wen from Wendy)
[name_f][/name_f][name_f]Estella[/name_f] Gweneira
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Gwennan[/name_f] or [name_f]Gwenna[/name_f]
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Arwen[/name_f]
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Gwenaelle[/name_f]
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Liliwen[/name_f] would work for both, with wen from [name_f]Wendy[/name_f] and Susan’s meaning of lily.
[name_f][/name_f][name_f]Estelle[/name_f] [name_m]Rowen[/name_m]
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Wrenley[/name_f] (is it a bit of a tongue twister though?
(There’s also [name_f]Gwenonwy[/name_f] which means lily of the valley).
[name_f][/name_f][name_f]Estelle[/name_f] [name_f]Roselil[/name_f]
[name_f][/name_f]If your last name is two syllables, you may want to avoid an L-containing 2 syllable middle as that might not flow very well?
[name_f][/name_f][name_f]Hope[/name_f] you find something you love 