- Author: Portia Takakjian Author Record # 300945
- Legal Name: Roach, Portia A. Johnston
- Birthplace: Los Angeles, California, USA
- Birthdate: 10 December 1930
- Deathdate: 17 February 1992
- Language: English
- Note: American illustrator, author & model ship builder. Also used the names Portia Johnston (maiden name), Portia Wiesner (mother's maiden name) & Portia Roach (second husband's name). Takakjian was her first husband's name.