[2] In 1724, he accelerated the Inquisition charges filed against Antoine Guigue, a French missionary based in Guangdong convicted of Jansenism.

[3] In 1745, the Bishop of Nueva Segovia Manuel del Río died from office and Arechederra was elected to occupy this position.

[4] Having heard of his acceptance as the bishop-elect of Nueva Segovia and his inauguration as the new governor-general, a letter coming from Madrid presented Arechederra to the King of Spain in 1750.

In return the King ordered bulls recognizing Arechederra as the new Bishop of Nueva Segovia and affirming his position as the governor-general.

On January 2, 1749, Arechederra welcomed the Sultan of Sulu Azim ud-Din (alternatively spelled as Alimuddin) who sought refuge to the Spanish colonial authorities.

Alimuddin I was previously ousted from his position as the sultan in a coup staged by his younger brother, Bantilan who seized the throne.