  We consider SU(3)-equivariant dimensional reduction of Yang-Mills theory on
Kaehler manifolds of the form M x SU(3)/H, with H = SU(2) x U(1) or H = U(1) x
U(1). The induced rank two quiver gauge theories on M are worked out in detail
for representations of H which descend from a generic irreducible
SU(3)-representation. The reduction of the Donaldson-Uhlenbeck-Yau equations on
these spaces induces nonabelian quiver vortex equations on M, which we write
down explicitly. When M is a noncommutative deformation of the space C^d, we
construct explicit BPS and non-BPS solutions of finite energy for all cases. We
compute their topological charges in three different ways and propose a novel
interpretation of the configurations as states of D-branes. Our methods and
results generalize from SU(3) to any compact Lie group.
