[GAIUS libro septimo ad edictum prouinciale. ] §5.1.13.prIn tribus istis iudiciis familiae erciscundae, communi diuidundo et finium regundorum quaeritur quis actor intellegatur, quia par causa omnium uidetur.
[GAIUS in the seventh book on the Provincial Edict.] In those three actions, namely, for the division of an inheritance, the division of common property, and the regulation of boundaries, it is asked who is to be understood as the plaintiff, because the position of all appears to be equal.
sed magis placuit eum uideri actorem qui ad iudicium prouocasset.
But the more accepted view is that he is deemed to be the plaintiff who initiated the proceedings.