Though Swiss and the son of an officer in the Dutch service, Louis's father had joined the armies of the King of France.
Following the overthrow of the King Louis XVI, both father and son were offered advancement in the French revolutionary army, and most brilliant prospects were held out to them.
They declined these offers, and Louis' father had the honor of marching his regiment from Paris back to Switzerland without losing a man.
Considering that the elder Gugy's men were disarmed, exposed to all manner of seductions, supplied by wine and allured by women, this feat certainly indicated the respect and regard in which he was held.
In an outburst of ruthless loyalty, and costing himself the price of a horse, the elder Gugy shot the animal so that it could never fall into the hands of a traitor, a trait that he detested.
Gugy's father-in-law was a tall man possessed of strength and great activity, and remembered to have saved the scalp of a soldier who had fallen in the field during the British retreat near Beauport, Quebec City.
With the yells of the rapidly approaching Indians in their ears, O'Connor returned to the soldier and carried him to the safety of the British ships.
On another occasion, in Montreal, a woman was seemingly left to her fate in a house fire, she being in an attic window with no ladders available to help her.