He was sentenced to be banished for (I think) ten years.
During his long banishment, the Prince Seravalle wandered over various portions of the globe, and at last found himself in Mexico.

After a residence at Vera Cruz, he travelled into the interior, to examine the remains of the ancient cities of the Western World; and impelled by his thirst for knowledge and love of adventure, he at last arrived on the western coast of America, and passing through California, fell in with the Shoshones, or Snake Indians, occupying a large territory extending from the Pacific to nearly the feet of the Rocky Mountains.

Pleased with the manners and customs and native nobility of this tribe of Indians, the Prince remained with them for a considerable time, and eventually decided that he would return once more to his country, now that his term of banishment had expired; not to resettle in an ungrateful land, but to collect his property and return to the Shoshones, to employ it for their benefit and advancement.
There was, perhaps, another feeling, even more powerful, which induced the Prince Seravalle to return to the Indians with whom he had lived so long.

I refer to the charms and attraction which a wild life offers to the man of civilization, more particularly when he has discovered how hollow and heartless we become under refinement.
Not one Indian who has been brought up at school, and among the pleasures and luxuries of a great city, has ever wished to make his dwelling among the pale faces; while, on the contrary, many thousands of white men, from the highest to the lowest stations in civilization, have embraced the life of the savage, remaining with and dying among them, although they might have accumulated wealth, and returned to their own country.
This appears strange, but it is nevertheless true.

Any intelligent traveller, who has remained a few weeks in the wigwams of well-disposed Indians, will acknowledge that the feeling was strong upon him even during so short a residence.