I highly doubt you’d want to use this name, but I came across a Spanish speaker named Hermenegilda (pron. er-men-eh-HEEL-da). Yuck. 
Other options…
[name_u]Jackie[/name_u]
[name_f]Hermione[/name_f]
[name_u]Jamie[/name_u]
[name_f]Jill[/name_f]
[name_f]Jane[/name_f]
Since you can’t use [name_f]Jacqueline[/name_f], I think it will be hard to find another feminine form of [name_m]Jack[/name_m] or [name_m]Herman[/name_m]. You could just go with another J-name.