The Sibsets you know game

That was such a tough one!

[name_u]David[/name_u] & [name_u]Vivian[/name_u]

or

[name_m]Joley[/name_m], [name_m]Bear[/name_m], [name_f]Landrie[/name_f], & [name_f]Vivienne[/name_f]?