Middle name for Jakob?

So I wanted to name our son Jakob Brian Tanner (Brian after his father that passed several years ago) but my husband doesn't want to because whenever we have a girl, we've picked out Emilie Jo Tanner (named after his living mother) and he feels bad naming two kids after his side of the family and no one from my family. Problem is I don't like the names for a boy on my side. Lol. What name do you think goes well with Jakob? We're down for unique or traditional names. But my husband wants to stress no biblical names. Lol.