Konstantinos Leichoudes was given a major administrative role by Isaakios I

Summary:
During the reign of Michael VI, Leichoudes took an advisory, not an administrative role. However Isaakios I, wishing to rule scientifically, chose Leichoudes as his chief administrator, admiring his maturity and ability despite criticism of his reliance on old, maybe outmoded, methods. But Isaakios did not know how to treat him, being rather intransigent 
Dates:
1057 
Emperor Isaakios I Komnenos (Isaakios 1)
  • Wishing to rule scientifically, he chose Konstantinos 13 as his chief administrator, admiring his maturity and ability despite criticism of his reliance on old methods; but he did not know how to treat him, being rather intransigent (:) Psellos Leichoudes 409
Konstantinos III Leichoudes, patriarch of Constantinople (Konstantinos 13)
  • He had a second brief period of government when Isaakios 1 came to the throne, being chosen by the emperor as a colleague in power, though criticised for sticking to his old methods despite increasing age and the passage of time (:) Psellos Leichoudes 409
  • He took an advisory, not an administrative, role during the reign of Michael 6 (who is not named) (:) Psellos Leichoudes 406
Emperor Michael VI Stratiotikos (Michael 6)
  • During his reign (he is not named) Konstantinos 13 took an advisory, not an administrative role (:) Psellos Leichoudes 406