I like [name]Peter[/name], [name]Kurt[/name] and [name]Lilah[/name] together but I think [name]Kathryn[/name] would be a better first with this sibset other than [name]Agatha[/name].
I think [name]Agatha[/name], [name]Harriet[/name], [name]Gilbert[/name] and [name]Edward[/name] would make a good sibset.