Mahlon Pitney, Pinel v. Pinel — Opinion of the Court
“ The settled rule is that when two or more plaintiffs having separate and distinct demands unite in a single suit, it is essential that the demand of each be of the requisite jurisdictional amount; but when several plaintiffs unite to enforce a single title or right in which they have a common and undivided interest, it is enough if their interests collectively equal the jurisdictional amount. ”
