It is important because it is the celebration of the Mexican victory over the French army at the battle of Puebla, on May 5, 1862. that is why it is celebrated on May 5 every single year.
Cinco de mayo is important because it is the celebration of the Mexican victory over French forces at the battle of Puebla, on May 5, 1862. that's why it is celebrated on May 5 every year.
When referring to full names in Spanish speaking countries, the father's last name goes first and the mother's goes at last. So it would be Rodrigo Sánchez Domínguez