Actually, Chiyojo was a blood relative of the important family Mochizuki, and Moritoki MOCHIZUKI, who was a nephew of Shingen, became irimuko (a man who takes his wife's name) of the Mochizuki family.
実は千代は甲賀流忍術の流れを汲む名家・望月家の血族であり、豪族望月氏には信玄の甥が入り婿になっていた。