Dirac fermions with linear energy dispersion with momentum space have been of current interest for spintronic applications because a variety of quantum transport phenomena manifest themselves in an external magnetic field due to extremely high mobility. Layered compound EuMnX2 (X=Bi, Sb) appears to provide an ideal arena to reveal the interplay between Dirac fermions and ordered magnetic moments. However, magnetic structure, which is vital to understand this interplay, has not been investigated so far through neutron diffraction experiment. This proposal is to serve as the first proposal to study the magnetic structures of two single crystal compound EuMnBi2 and EuMnSbBi.