In 1600, after the Battle of Sekigahara, he moved to Edo because he, his grandson, Naofusa IMAGAWA, and his second son, Takahisa SHINAGAWA (Ieyasu notified that 'the use of family name Imagawa should be limited to the head family,' therefore, family members other than the head Imagawa family used the name 'Shinagawa'), all served Hidetada TOKUGAWA and became direct retainers of Edo Shogunate (the heir, Norimochi IMAGAWA died young of an illness).
慶長5年（1600年）、関ヶ原の戦いの後、嫡孫・今川直房と、二男・品川高久（家康より「今川の姓は宗家に限る」との沙汰上があり、今川宗家以外は「品川」を名乗った）と共に徳川秀忠に出仕して江戸幕府の旗本に列したため、江戸に移住した（嫡男の今川範以は若くして病死していた）。