Hirano Nagayasu (平野長泰) (1559 – 1628) was a samurai retainer to Japanese warlord Toyotomi Hideyoshi during the Azuchi-Momoyama period of the 17th century. He was known as one of the "Seven Spears of Shizugatake". He fought alongside the Eastern Army at the Battle of Sekigahara, and changed sides once again, requesting to serve under the Toyotomi clan in the siege of Osaka fifteen years later, but was denied.
Nagayasu became a hatamoto in the Edo period.
The original article can be found at Hirano Nagayasu and the edit history here.