Search gender: all male female Japanese Names Meaning Sonshin 1 names found. gender: all male female Name: sonshin Katakana: ソンシン 0 Kanji: 孫伸 Meaning: 孫Grandchild 伸Stretch. To extend. To extend and spread. To extend one's influence. To relax. To release tension. To state. to declare. NAZUKE PON > About Japanese Names > Search Japanese Names By Meaning > Japanese Names Meaning Sonshin