(First off, could someone explain what DH and DS mean?)
The second poster will put one name on the sibset to go with #1, and it continues until we reach five siblings. Then, of course, it starts over.
[name_u]Michael[/name_u]
DH means Dear Husband, DS = Dear [name_m]Son[/name_m]
You also have DD (Dear Daughter) and DW (Dear Wife)
[name_u]Michael[/name_u] and [name_f]Malia[/name_f]
Thank you! 
[name_u]Michael[/name_u], [name_f]Malia[/name_f], and [name_f]Millicent[/name_f]
[name_u]Michael[/name_u], [name_f]Malia[/name_f], [name_f]Millicent[/name_f] & [name_f]Mariah[/name_f]
[name_u]Michael[/name_u], [name_f]Malia[/name_f], [name_f]Millicent[/name_f], [name_f]Mariah[/name_f], & [name_f]Mila[/name_f]
Great!
[name_m]Sven[/name_m]
[name_m]Sven[/name_m] and [name_f]Sienna[/name_f]
[name_m]Sven[/name_m], [name_f]Sienna[/name_f], and [name_f]Samantha[/name_f]
[name_m]Sven[/name_m], [name_f]Sienna[/name_f], [name_f]Samantha[/name_f], and [name_f]Sabrina[/name_f]
[name_m]Sven[/name_m], [name_f]Sienna[/name_f], [name_f]Samantha[/name_f], [name_f]Sabrina[/name_f], & [name_m]Seamus[/name_m]
[name_m]Hamish[/name_m] (they don’t have to have the same letter, just the same style. :))
[name_m]Hamish[/name_m] and [name_u]Sawyer[/name_u]
[name_m]Hamish[/name_m], [name_u]Sawyer[/name_u] and [name_m]Angus[/name_m]
[name_m]Hamish[/name_m], [name_u]Sawyer[/name_u], [name_m]Angus[/name_m], and [name_u]Dagny[/name_u]
[name_m]Hamish[/name_m], [name_u]Sawyer[/name_u], [name_f]Agnus[/name_f], [name_u]Dagny[/name_u], and [name_f]Elsbeth[/name_f]
[name_f]Emmeline[/name_f] …
[name_f]Emmeline[/name_f] & [name_u]Remy[/name_u]
[name_f]Emmeline[/name_f], [name_u]Remy[/name_u], [name_f]Amerie[/name_f],
[name_f]Emmeline[/name_f], [name_u]Remy[/name_u], [name_f]Amerie[/name_f], [name_m]Cormac[/name_m]
[name_f]Emmeline[/name_f], [name_u]Remy[/name_u], [name_f]Amerie[/name_f], [name_m]Cormac[/name_m], and [name_f]Niamh[/name_f]