In my story, the main character is named [name_f]Georgia[/name_f]. [name_f]Georgia[/name_f] Faire (Faire pronounced like Dare). However, [name_f]Georgia[/name_f] has two brothers, both are older than her.
I really want to name them [name_m]William[/name_m] and [name_m]Harry[/name_m], but if I do I feel like everyone will be like “omg, she stole the British Princes’ names”, which is terrifying.
I’ve also considered [name_m]Declan[/name_m] ([name_m]Clay[/name_m]) but… I don’t know. I want names that flow well with [name_f]Georgia[/name_f], and one that fits with the surname (which is Faire). 
Have you considered giving one of the boys a nickname? “[name_m]Bill[/name_m]” can be a nickname for [name_m]William[/name_m], and that sounds far less conspicuous when they’re named [name_m]William[/name_m] and [name_m]Harry[/name_m].
If that’s still too close for comfort, here’s more:
[name_m]Harvey[/name_m]
[name_m]Rupert[/name_m]
Godwin
[name_m]Edmund[/name_m]
[name_m]Arthur[/name_m]
[name_m]Benedict[/name_m]
[name_m]Augustus[/name_m]
[name_m]Gideon[/name_m]
[name_m]Edwin[/name_m]
[name_m]Nicholas[/name_m]
[name_m]Christian[/name_m]
I do like [name_m]Declan[/name_m], but not the nickname [name_m]Clay[/name_m]. Maybe [name_u]Dean[/name_u]?
[name_u]Micah[/name_u], [name_u]Mercer[/name_u], [name_u]Everett[/name_u], [name_m]Edison[/name_m], [name_m]Lucius[/name_m], [name_m]Lucas[/name_m], [name_m]Elijah[/name_m], [name_m]Jonas[/name_m]
I feel like [name_m]Declan[/name_m] would not fit with [name_f]Georgia[/name_f] and that classic kind of theme.
[name_m]How[/name_m] about:
[name_u]James[/name_u]
[name_u]Sam[/name_u]
[name_m]George[/name_m]
[name_m]Peter[/name_m]
[name_m]Paul[/name_m]
[name_m]David[/name_m]
[name_m]Daniel[/name_m]
[name_m]Gregory[/name_m]
[name_u]Elliott[/name_u] and [name_m]Samuel[/name_m]
[name_m]Caleb[/name_m]
[name_m]Henry[/name_m] “[name_m]Harry[/name_m]”
[name_m]Willem[/name_m]
[name_m]Alexander[/name_m]
[name_m]Charles[/name_m]
[name_m]Andrew[/name_m]
[name_u]James[/name_u]