  The quark and charged lepton masses and the angles and phase of the CKM
mixing matrix are nicely reproduced in a model which assumes SU(3)xSU(3)
flavour symmetry broken by the v.e.v.'s of fields in its bi-fundamental
representation. The relations among the quark mass eigenvalues, m_u/m_c \approx
m_c/m_t \approx m^2_d/m^2_s \approx m^2_s/m^2_b \approx
\Lambda^2_{GUT}/M^2_{Pl}, follow from the broken flavour symmetry. Large
tan(beta) is required which also provides the best fits to data for the
obtained textures. Lepton-quark grandunification with a field that breaks both
SU(5) and the flavour group correctly extends the predictions to the charged
lepton masses. The seesaw extension of the model to the neutrino sector
predicts a Majorana mass matrix quadratically hierarchical as compared to the
neutrino Dirac mass matrix, naturally yielding large mixings and low mass
hierarchy for neutrinos.
