Names for Siblings

I am writing a story about a large family. The children would all be in their twenties now and I want to make sure that the names are not too out there and that they fit in eighties to nineties time period.

[name_u]Mason[/name_u] [name_u]James[/name_u]
[name_u]Piper[/name_u] [name_f]Madeline[/name_f]
[name_f]Chloe[/name_f] [name_u]Quinn[/name_u]
[name_u]Addison[/name_u] [name_f]Vanessa[/name_f]
[name_f]Gwendolyn[/name_f] [name_u]Jude[/name_u]
[name_m]Xavier[/name_m] [name_u]Finn[/name_u]
[name_f]Clara[/name_f] [name_f]Lucille[/name_f]
[name_f]Emmalyn[/name_f] [name_f]Louise[/name_f]

I am looking for feedback.

I think they made a good sub set but [name_f]Chloe[/name_f] and [name_f]Clara[/name_f] and [name_f]Emmalyn[/name_f] and [name_f]Gwendolyn[/name_f] are for my taste a little bit to similar.

Where are they from? What were the people like who named them?