  We study the Coulomb phase of N=1 SU(2)^3 gauge theory coupled to one
trifundamental field, and generalizations thereof. The moduli space of vacua is
always one-dimensional with multiple unbroken U(1) fields. We find that the N=1
Seiberg-Witten curve which encodes the U(1) couplings is given by the double
cover of a Riemann surface branched at the poles and the zeros of a meromorphic
function.
