Sibling names

What would you name a sibling to [name_u]Keegan[/name_u] [name_m]Marshall[/name_m]? [name_m]Just[/name_m] a name I would name a son in the future if I had one. [name_u]Keegan[/name_u] I [name_u]LOVE[/name_u] and [name_m]Marshall[/name_m] is the form of my mother’s name [name_f]Marcia[/name_f] ([name_f]Marsha[/name_f]) and it deals with horses which I [name_u]LOVE[/name_u].

My current favorite BOYS names:
[name_u]Carter[/name_u]
[name_u]Skylar[/name_u] “[name_u]Sky[/name_u]”
[name_u]Dakota[/name_u] “Kota”
[name_u]Dallas[/name_u] “Dally or [name_m]Dal[/name_m]”
[name_u]Shiloh[/name_u] nn Shi (Shy)
[name_u]Easton[/name_u]
[name_u]Oakley[/name_u]
[name_u]Casey[/name_u]

GIRLS NAMES:
[name_u]Charlie[/name_u]/[name_u]Charley[/name_u]
[name_u]Tatum[/name_u]
[name_f]Lilia[/name_f]
[name_f]Kaydence[/name_f]
[name_f]Willow[/name_f]
[name_f]Iris[/name_f]
[name_u]Dallas[/name_u]
[name_m]Kaysen[/name_m]
[name_f]Arianna[/name_f]
[name_u]Julianne[/name_u]
[name_f]Juliet[/name_f]

Any ideas?

Thanks