Yoro Dyao was in command of the canton of Foss-Galodjina and was set over Wâlo (Ouâlo) by Louis Faidherbe, where he served as a chief from 1861 to 1914. Senegalese resistance to the French expansion and curtailing of their lucrative slave trade was led in part by Lat-Dior, Damel of Cayor, and Maad a Sinig Kumba Ndoffene Famak Joof, the Maad a Sinig of Siné, resulting in the Battle of Logandème.