The dragon is first wife, second is the hero, third is the wolf girl. He also promise to marry all the loli in the lair + the princess from the kingdom from recent chapter. Idk if he will marry sword daughter in the future though since they look more like normal father and daughter.
To whomever translated this chapter: since you apparently don't know the difference between personal and possessive pronoun, here a quick reference table
@StaK I read the translated novel, usually people use novelupdate to manage their novel, kinda like mangadex. You can see the novelupdate link on manga front page, in information section.
i already know that the horned sheep demons is very curious about things,would like to know the harem though,is the sheep waifu in his harem?also is the sheep waifu a virgin ?would like to ask for personal reasons (・´з`・)