This man took up the mantle of his mentor, Oda Nobunaga, after opposing Toyotomi Hideyoshi for rulership of all Japan and crushing all who opposed him in the Battle of Sekigahara.
In his retirement, this man managed his country's diplomatic relations with Spain and the Netherlands in the position of ogosho. He ordered his eldest son to commit suicide because that son conspired with Takeda Katsuyori. Among his later acts was the exclusion of all Kirishitans from Japan and the removal of the power of the daimyos in the Kuge Shohatto. This man took up the mantle of his mentor, Oda Nobunaga, after opposing Toyotomi Hideyoshi for rulership of all Japan and crushing all who opposed him in the Battle of Sekigahara. For 10 points, name this founder of a Japanese shogunate which lasted until the Meiji Restoration.
In his retirement, this man managed his country's diplomatic relations with Spain and the Netherlands in the position of ogosho.
{Tokugawa} Ieyasu [accept names in either order; prompt on “Ieyasu”]