Phratry
In ancient Greece, a phratry (Ancient Greek: φρᾱτρῐ́ᾱ, romanized: phrātríā, lit. 'brotherhood, kinfolk', derived from Ancient Greek: φρᾱ́τηρ, romanized: phrā́tēr, lit. 'brother') was a group containing citizens in some city-states. Their existence is known in most Ionian cities and in Athens and it is thought that they existed elsewhere as well.