Who is Carlos Raul Xavier Miranda from A Dangerous Fortune and what is their importance?

Miranda, is the father of Micky and is known as Papa Miranda. He travels to London to buy rifles and meets with his son. He needs to buy two thousand rifles and ammunition but will not tell his son why. Carlos is involved in planning a takeover of the Cordovan government, envisioning himself or Micky as the new President in time. The revolution does not succeed.