Search gender: all male female タダトウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: tadato Katakana: タダトウ 0 Kanji: 忠勝 Meaning: 忠Sincerity. To serve with sincerity. Seriousness. To serve the state or sovereign with all one's heart. To work hard without bothering. 勝Win. To defeat an opponent. Be superior to others. To endure. Good scenery or landscape. Excellent. All. No residue. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > タダトウ Japanese Boy Names Variations.