Gaston was married to Princess Isabel, heiress to the Brazilian imperial throne.

For this reason, Princess Isabel insisted that her father convoke the Council of State to deal with the situation.

Despite his affection for his daughters, he did not believe that Princess Isabel, although his heir, would have any chance of prospering on the throne.

His wife, Princess Isabel, was elderly, unwell and unable to participate.

Princess Isabel and her father were frequent spectators, and often called upon to present trophies to the winners.

He was very linked to the Brazilian Imperial Family, even becoming a tutor for Princess Isabel's children.

Princess Isabel wished to hold a discrete and private burial ceremony.

Princess Isabel was a recipient of the following Brazilian orders:

He was raised primarily by his grandmother, Princess Isabel, and numerous preceptors imbued to educate him as future emperor of Brazil.

Princess Isabel didn't travel because she was old and sick, making the trip not recommended.