[name_f]Lucy[/name_f] and [name_m]Samuel[/name_m] are lovely; I agree that [name_f]Sadie[/name_f] is very usable here—it shares the same first two letters with [name_m]Samuel[/name_m], but the sound is quite different! [name_f][/name_f] I think [name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Sadie[/name_f] works really well. [name_f][/name_f] Here are a few additional ideas:
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Anna[/name_f] or [name_f]Annabel[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Clara[/name_f] or [name_f]Claire[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Daisy[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Daphne[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Rose[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Emilia[/name_f] or [name_f]Emma[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Caroline[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Felicity[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Pearl[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Tessa[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Juliet[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Beatrix[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Grace[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Maria[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Emmeline[/name_f]
[name_f][/name_f][name_f]Lucy[/name_f], [name_m]Samuel[/name_m], and [name_f]Eva[/name_f]
Good luck!