With [name_m]Oscar[/name_m] [name_m]Hugo[/name_m] [name_m]Francis[/name_m], I’d consider:
[name_f][/name_f][name_f]Rosa[/name_f] [name_f]Emmeline[/name_f] [name_f]Harriet[/name_f]
[name_f][/name_f][name_m]Benjamin[/name_m] [name_m]Parks[/name_m] [name_m]Ernest[/name_m]
[name_f][/name_f][name_f]Harriet[/name_f] [name_f]Christina[/name_f] [name_f]Pearl[/name_f] (blending sounds of [name_f]Erna[/name_f] and Paul)
[name_f][/name_f][name_m]Emmett[/name_m] [name_m]James[/name_m] [name_m]Paul[/name_m] (Emmett inspired by Emma)