Gekokujo is a mod for Mount and Blade Warband set in the Sengoku period of Japan. The name is a term often translated as "the low-ranked taking over from the high" and was chosen because it was a running theme during that era: Oda Nobunaga descended from a clan of deputies to the nominal governor of their province, but the Oda usurped them and toppled their neighbors; Toyotomi Hideyoshi began his career as a cook and sandal bearer and ended up the ruler of Japan; Tokugawa Ieyasu was an upstart who probably fabricated a claim of descent from the Minamoto clan--the only ones allowed to be granted the title of Shogun. As a player of Gekokujo, you will start from nothing and attempt to gain control of the entire country, making the title fitting.
A small edit ontop of the Gekokujo Daimyo Edition mod, "Named Daimyo" does what it does, and names the Daimyo. Effectively turning i.e. Great Lord Imagawa into Daimyo Imagawa Ujizane.
Please note that albeit this is essentially a submod, it has been released as a full Gekokujo: Daimyo Edition module. The only effective change is an edited troops.txt file which provides the historical names. The reason for releasing it with the entire stock module is to ensure that current playthroughs are not compromised.
Download, extract / put into modules > enjoy! (There's also a troops_backup file so if you want you can reset back, or, edit the troops file urself for some personal enjoyment)