Tarihi ya nuna cewa Mangawa (Barebari) suka kafa Garin Lautai, Wanda a zamanin yau ake kira Gumel. Kamar yadda Masana tarishi suka bayyana cewa Mangawa (Barebari), sun kauro ne daga kogin Maliya a kasar Masar, suka dinga yada zango a gurare daban-daban har sai da suka sami yada wani gagarumin zango a Ngazargamu, a kudancin Cadi. Wannan shine babban yada zango da suka yi a shekara ta 1480, wanda shine lokacin da aka kafa ta karkashin Shehun Borno, kamar yadda aka santa a yau. Bayan karamin lokaci ba da jimawa ba, sai wadannan bakin suka sake kwasar kayansu suka yi gaba. Wannan karon shine kuma suka doshi yamma saida suka dangana da wata fada mai suna Tumbi, suka huta sa’annan suka kara kutsawa zuwa Gumel, inda suka kafa masaukinsu na karshe, tsakanin 1729-1848.