[name_u]Love[/name_u] Car0line H0pe 
Your daughter’s name has a southern flair which I find really appealing and I think [name_m]Shepherd[/name_m] makes a fabulous brother name. I also like [name_u]Will[/name_u] [name_m]Shepherd[/name_m]. But I prefer [name_u]William[/name_u] [name_m]Shepherd[/name_m] this name is very classic and sounds fab with Car0line H0pe. [name_u]Adler[/name_u] [name_m]Luke[/name_m] is strong but just doesn’t appeal as much.
Some boy name suggestions: [name_u]Alden[/name_u], [name_u]Sonny[/name_u], [name_u]Marlow[/name_u], [name_m]Abel[/name_m], [name_u]Dorian[/name_u], [name_m]Caspian[/name_m], [name_m]Prosper[/name_m], [name_u]Noble[/name_u], [name_m]Thatcher[/name_m], [name_u]Montgomery[/name_u], [name_u]Sawyer[/name_u], [name_u]Forest[/name_u], [name_u]Wilder[/name_u], [name_m]Orson[/name_m], [name_m]Hart[/name_m], [name_m]Sebastian[/name_m], [name_m]Theodore[/name_m], [name_m]Frederick[/name_m], [name_m]Samuel[/name_m], [name_m]Nathanael[/name_m], [name_m]Solomon[/name_m] + [name_m]Reuben[/name_m].
As for your girl names I love [name_u]Paisley[/name_u] and she has a great sound with Car0line. I also like the matching word middle names of Pr0mise + H0pe. I get that your friend likes this name but honestly I deeply regret letting go off a baby name because a friend chose the name for their daughter. I think you should follow your heart and go with your favourite name [name_u]Paisley[/name_u] [name_u]Promise[/name_u]! However I know that it’s a tricky path to follow and when I was expecting my daughter I couldn’t tread on my friend’s toes so maybe [name_u]Piper[/name_u], [name_f]Maisie[/name_f] or [name_u]Peyton[/name_u] could work. In relation to [name_u]Hadley[/name_u] and niece [name_f]Haddie[/name_f] I believe they are too similar so think maybe [name_u]Harper[/name_u], [name_u]Harlow[/name_u] or [name_u]Hartley[/name_u] could work as an alternative.
Some girl name suggestions: [name_f]Summer[/name_f], [name_f]Faith[/name_f], [name_f]Autumn[/name_f], [name_f]Sunday[/name_f], [name_u]Fifer[/name_u], [name_u]Lennon[/name_u], [name_u]Bellamy[/name_u], [name_f]Francesca[/name_f], [name_f]Tallulah[/name_f], [name_f]Savannah[/name_f], [name_u]Ruby[/name_u], [name_f]Goldie[/name_f], [name_f]Marnie[/name_f], [name_f]Eliza[/name_f], [name_u]Willow[/name_u], [name_f]Scarlett[/name_f], [name_u]Winslow[/name_u], [name_f]Arrietty[/name_f], [name_f]Gemma[/name_f] + [name_u]Briar[/name_u]
[name_f]Hope[/name_f] this helps