Using their initials and middle names I thought matched well…
DD1 (11): [name_f]Martha[/name_f] [name_f]Wonder[/name_f]
DS1/DS2/DS3 (10): [name_m]Arthur[/name_m] [name_m]Lemmy[/name_m], [name_m]Benedict[/name_m] [name_f]Hazel[/name_f], [name_m]Jude[/name_m] [name_m]Perrin[/name_m]
DD2 (9): [name_f]Violet[/name_f] [name_f]Agatha[/name_f]
DS4 (8): [name_m]Newton[/name_m] [name_m]Walter[/name_m]
DD3 (7): [name_f]Mildred[/name_f] [name_f]Zelda[/name_f]
DD4 (5): [name_f]Clementine[/name_f] [name_f]Ida[/name_f]
[name_f]Martha[/name_f], [name_m]Arthur[/name_m], [name_m]Benedict[/name_m], [name_m]Jude[/name_m], [name_f]Violet[/name_f], [name_m]Newton[/name_m], [name_f]Mildred[/name_f], and [name_f]Clementine[/name_f] 
[name_f]Martie[/name_f], [name_m]Bear[/name_m], [name_m]Basil[/name_m], Jupie, [name_f]Viola[/name_f], [name_m]Newt[/name_m], [name_f]Millie[/name_f], [name_f]Clemmie[/name_f] 