Thierry I 'The Treasurer' De Chaunois Comte D'Autun
Thierry I 'The Treasurer' was born about 0817.  He died before 0880.¹ 

 Thierry II (or Theodoric) Comte De Chaunois
He died before 0893.¹ 

 Richard De Sens
He died after 0885.¹