  We present results on the masses of the low-lying baryons using ten ensembles
of gauge configurations with $N_f =2+1+1$ dynamical twisted mass fermions, at
three values of the lattice spacing, spanning a pion mass range from about 210
MeV to about 430 MeV. The strange and charm quark masses are tuned to
approximately their physical values. We examine isospin symmetry breaking
effects on the baryon mass and the dependence on the lattice spacing. After
taking the continuum limit we use chiral perturbation theory to extrapolate to
the physical vlaue of the pion mass for all forty baryons. We provide
predictions for the masses of doubly and triply charmed baryons that have not
yet been measured experimentally.
