If you try to map Hernando, Florida on your phone you will wind up in Citrus County. This is because there is a Hernando in Citrus County. The city was formed in 1881 by the Van Ness and Croft families. The city of Hernando disincorporated in the 1970's.
The city is named in honor of Hernando De Soto just like the county. Hernando De Soto marched through the area while exploring America for Spain. Hernando De Soto died of fever on the expedition in Louisiana.