Matsudaira Ietada served as a bushō during the Sengoku and Azuchi-Momoyama periods.  Ietada was the third head of the Tōjō-Matsudaira family and served as the lord of Tōjō Castle in Mikawa Province.

Ietada was born as the son of Matsudaira Tadashige.  His mother was the daughter of Matsui Tadanao.  The Tōjō-Matsudaira were an illegitimate branch of the Matsudaira clan descended from the Nitta clan of the Seiwa-Genji lineage.

Accompanying the death in battle of his father, Tadashige, Ietada inherited the headship of the clan and received official recognition of his rights to his father’s landholdings in service to Matsudaira Ieyasu.  Ietada, however, was still an infant so his uncle, Matsui Tadatsugu, served as his guardian.  After Ietada’s coming-of-age ceremony, Tadatsugu continued to serve as a deputy to him.  In battle against the Tōjō-Kira clan, Ietada, together with Tadatsugu, made contributions and garnered Tōjō Castle.  A cousin of the same name of Matsudaira Ietada (Tonomo-no-suke) of the Fukōzu-Matsudaira family was of a similar age and resided nearby.  Ietada (Jintarō) wed the younger sister of Ietada (Tonomo-no-suke) so they developed close relations.  Later, he served in numerous battles including the Battle of Anegawa and the Battle of Nagashino.  Ietada, however, had frail health and, in 1581, died of illness at Tōjō Castle.

Tokugawa Ieyasu had his fourth son, Tadayoshi, inherit the family name.  Ietada’s surviving wife returned to the location of her older brother, Ietada (Tonomo-no-suke) of the Fukōzu-Matsudaira family.