We'll need to invite all of the members of the Smith family, as well as their husbands, wives, and children, to the wedding.
We'll need to invite all of the members of the Smith family, thereforetheir husbands, wives, and children, to the wedding.
We'll need to invite all of the members of the Smith family, althoughtheir husbands, wives, and children, to the wedding.
We'll need to invite all of the members of the Smith family, however their husbands, wives, and children, to the wedding.