KhizarKhail (خضر خیل) is a clan of Isakhel (sub-tribe) of Pashtun tribe Niazi or Niazai. Their ancestral village is Khaglan Wala, Isa Khel Tehsil, Mianwali...

that time Mammun Khel clan were further divided into four sub-clans KhizarKhail, Shamsi Khel, Pahar Khel and Ahmed Khel. The name Shamsi Khel no more...