Breaking a trend

In my fictional sibset I have [name_m]Ernest[/name_m], [name_m]Eugene[/name_m] and [name_m]Edward[/name_m]. I really like the set but I want to make it bigger and other boy E or girl names don’t really have the name feel to me. Would it be weird to break the trend? Could I use a different letter for girls?

What I feel flows but starts with a different letter:
[name_m]Ralph[/name_m]
[name_m]Clive[/name_m]
[name_u]Laurence[/name_u]
[name_f]Philippa[/name_f]
[name_f]Bertha[/name_f]
[name_f]Nellie[/name_f]
[name_m]Harold[/name_m]
Alder
[name_m]Franklin[/name_m]
Wilfred

After three with the same letter I would stick with the theme unless it’s for girls names. That being said, I think [name_f]Philippa[/name_f] and [name_f]Nellie[/name_f] go well with what you have.

Some suggestions:
[name_m]Earl[/name_m]
[name_m]Enoch[/name_m]
[name_u]Ennis[/name_u]
[name_m]Eben[/name_m]
[name_m]Eamon[/name_m]
[name_m]Ephraim[/name_m]
[name_m]Eleazar[/name_m]
[name_m]Eldon[/name_m]
[name_m]Ezekiel[/name_m]
[name_u]Elisha[/name_u]
[name_m]Elmo[/name_m]
[name_u]Ellis[/name_u]
[name_m]Elton[/name_m]
[name_u]Emery[/name_u]
[name_m]Emrys[/name_m]
[name_m]Enos[/name_m]
[name_m]Errol[/name_m]
[name_m]Eustace[/name_m]
[name_u]Everett[/name_u]
[name_m]Ezra[/name_m]

[name_f]Winifred[/name_f]
[name_f]Amelia[/name_f]
[name_f]Beatrice[/name_f]
[name_f]Ruth[/name_f]
[name_f]Esther[/name_f]
[name_f]Edna[/name_f]
[name_f]Edith[/name_f]
[name_f]Elodie[/name_f]
[name_f]Eula[/name_f]