His father Shingen petitioned Yoshiaki ASHIKAGA to grant an official rank and Henki (a portion of the name of a person in high rank, which is given to a retainer to show the subordination) to Katsuyori, but it was not materialized due to the pressure of Nobunaga ODA.
父信玄は足利義昭に官位と偏諱の授与を願ったが、織田信長の圧力によって果たせなかった。