Summary

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.
Source: Wikisource

Mahlon Pitney Pinel v. Pinel — Opinion of the Court

The averment that complainant Pinel is entitled to an undivided one-eighth interest, and complainant Slyfield to an undivided two-eighths interest, making together an undivided three-eighths interest in the property in question, 'which said interests are of the value of $4,500 and upwards over and above all encumbrances,' is not the legal equivalent of saying that the interest of either complainant is of the value of more than $3,000. It is not necessarily to be inferred that the value of an undivided two-eighths is two-thirds of the value of an undivided three-eighths.
Source: Wikisource

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