Skyrmions, nano-sized topological objects, have recently been found in GaV4S8 and GaV4Se8materials. In the search of new Skyrmion hosting materials, we have synthesised the GaV4S8-ySey (y = 0 to 8) family of materials. In contrasts to the long range ferromagnetic orderingexhibited by GaV4S8 and GaV4Se8, a canted antiferromagnetic state is found in materials with ybetween 2 and 6. Here we propose to investigate the nuclear and magnetic structures of GaV4S8,GaV4Se8 and GaV4S4Se4 samples with neutron diffraction in order to explore the drastic changein the observed magnetism in this family. We will be using both powder samples (GEM) andsingle crystals (SXD) for our investigations.