Search gender: all male female タダマロ Japanese Boy Names Variations. 1 names found. gender: all male female Name: tadamaro Katakana: タダマロ 0 Kanji: 忠麿 Meaning: 忠Sincerity. To serve with sincerity. Seriousness. To serve the state or sovereign with all one's heart. To work hard without bothering. 麿Me. First person. A suffix added to a person's name. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > タダマロ Japanese Boy Names Variations.