  We study the light quark-mass dependence of charmed baryon masses as measured
by various QCD lattice collaborations. A global fit to such data based on the
chiral SU(3) Lagrangian is reported on. All low-energy constants that are
relevant at next-to-next-to-next-to-leading order (N$^3$LO) are determined from
the lattice data sets where constraints from sum rules as they follow from
large-Nc QCD at subleading order are considered. The expected hierarchy for the
low-energy constants in the 1/Nc expansion is confirmed by our global fits to
the lattice data. With our results the low-energy interaction of the Goldstone
bosons with the charmed baryon ground states is well constrained and the path
towards realistic coupled-channel computations in this sector of QCD is
prepared.
