I think [name_u]Rowan[/name_u] and [name_m]Hugo[/name_m] are nice together. They aren’t the same style, but I think it still works. I prefer [name_m]Hugo[/name_m] with [name_f]Adelina[/name_f], but [name_u]Rowan[/name_u] is nice too. I think [name_m]Hugo[/name_m] and [name_f]Adeline[/name_f] have the same style, they’re classic but hip at the same time.
I do not think names have to be the same style to work together for a sibset. [name_u]Rowan[/name_u] and [name_m]Hugo[/name_m] compliment each other well, are both very different from each other, yet, they don’t clash. If you love both names together, and you love both separately, then you have made much progress.
If you love the names, use them! I think [name_m]Hugo[/name_m] and [name_f]Adelina[/name_f] go better together, but I think [name_f]Adelina[/name_f] and [name_u]Rowan[/name_u] are nice, too. [name_f]Adelina[/name_f], [name_u]Rowan[/name_u], and [name_m]Hugo[/name_m] are great. For some reason, I slightly prefer [name_m]Ronan[/name_m] to [name_u]Rowan[/name_u].
[name_m]Hugo[/name_m] and [name_u]Rowan[/name_u] are different styles
[name_m]Hugo[/name_m] and [name_u]Rowan[/name_u] share a strong “oh” sound
[name_m]Hugo[/name_m] “fits” better with a sister name [name_f]Adelina[/name_f]
I like both names but I think [name_m]Hugo[/name_m] is the best choice.