You could always use a longer form of these names. [name_m]Leonardo[/name_m], [name_u]Jackson[/name_u], [name_m]William[/name_m] for example. Is your last name one syllable?
Thanks so much this is a great idea, our surname is two syllables but 5 letters long, I think with [name_u]Rhys[/name_u] as a middle name the first name will definitely have to be longer.
I really like [name_m]Leonardo[/name_m] nick name [name_m]Leo[/name_m]! Other suggestions…
Theodore nn [name_u]Theo[/name_u]
[name_m]Frederick[/name_m] nn [name_u]Freddie[/name_u]
[name_m]Harrison[/name_m] nn [name_u]Harry[/name_u]
[name_u]Emerson[/name_u]