Your search has yeild 2 works by Ashitaka.
Ashitaka Date of birth/death unknown, fl. c. 1817
The Actor Nakamura Utaemon as Ishikawa Goemon
1817 Color woodblock print on paper (diptych)
The Actor Nakamura Matsue as Satsukihime
1817 Color woodblock print on paper (diptych)