Miguel was born in Reichenau an der Rax, Austria-Hungary the eldest son and heir of the Miguelist pretender to the Portuguese throne Miguel, Duke of Braganza and his first wife Princess Elisabeth of Thurn and Taxis.
Prince Miguel's father was the head of the non reigning branch of the Portuguese Royal House that had been exiled from Portugal.
The exile was the result of the Portuguese law of banishment of 1834 and the constitution of 1838 which was brought about because in 1828 his grandfather Miguel usurped the throne of Portugal from his niece Queen Maria II.
His grandfather reigned as king until 1834 when Maria II was restored.

Like his father Miguel pursued a career in the Army and served in a Saxon cavalry regiment.
On 16 September 1900 Miguel was riding back into town in a Phaeton after having attended a dinner at a country house, when he caught his wheels in the carriage of Prince Albert, the nephew of King Albert of Saxony.
The collision was so great that the carriage overturned into a ditch, with the prince dying of his injuries a few hours after.
Because it could not be determined whether it was an accident or intentional Miguel escaped a court martial but he was forced to give up his commission in the Army and leave the country.

A year later he caused more controversy when it was discovered that while King Carlos I of Portugal was visiting the United Kingdom, Miguel had entered Portugal with the aim of assisting an uprising against the king.
After this was discovered he effectively became a social outcast.
Miguel was born in Reichenau an der Rax, Austria-Hungary the eldest son and heir of the Miguelist pretender to the Portuguese throne Miguel, Duke of Braganza and his first wife Princess Elisabeth of Thurn and Taxis. Prince Miguel's father was the head of the non reigning branch of the Portuguese Royal House that had been exiled from Portugal. The exile was the result of the Portuguese law of banishment of 1834 and the constitution of 1838 which was brought about because in 1828 his grandfather Miguel usurped the throne of Portugal from his niece Queen Maria II. His grandfather reigned as king until 1834 when Maria II was restored.
Like his father Miguel pursued a career in the Army and served in a Saxon cavalry regiment. On 16 September 1900 Miguel was riding back into town in a Phaeton after having attended a dinner at a country house, when he caught his wheels in the carriage of Prince Albert, the nephew of King Albert of Saxony. The collision was so great that the carriage overturned into a ditch, with the prince dying of his injuries a few hours after. Because it could not be determined whether it was an accident or intentional Miguel escaped a court martial but he was forced to give up his commission in the Army and leave the country.
A year later he caused more controversy when it was discovered that while King Carlos I of Portugal was visiting the United Kingdom, Miguel had entered Portugal with the aim of assisting an uprising against the king. After this was discovered he effectively became a social outcast.
Prince Miguel, Duke of Viseu