  In this paper using the Clifford bundle (Cl(M,g)) and spin-Clifford bundle
(Cl_{Spin_{1,3}^{e}}(M,g)) formalism, which permit to give a meaningfull
representative of a Dirac-Hestenes spinor field (even section of
Cl_{Spin_{1,3}^{e}}(M,g)) in the Clifford bundle , we give a geometrical
motivated definition for the Lie derivative of spinor fields in a Lorentzian
structure (M,g) where M is a manifold such that dimM =4, g is Lorentzian of
signature (1,3). Our Lie derivative, called the spinor Lie derivative (and
denoted {\pounds}_{{\xi}}) is given by nice formulas when applied to Clifford
and spinor fields, and moreoverl {\pounds}_{{\xi}}g=0 for any vector field
{\xi}. We compare our definitions and results with the many others appearing in
literature on the subject.
