Micaela is a feminine given name with origins in the Hebrew language. It is a variant of the name Michael, which means "who is like God?" in Hebrew. The earliest known use of the name Micaela dates back to the 13th century in Italy.

In the 16th century, the name gained popularity in Spain and other parts of the Spanish-speaking world. It was also used in Portugal and Portuguese-speaking regions during this time period. The name is thought to have spread through the influence of the Roman Catholic Church and the veneration of the Archangel Michael.

One of the earliest recorded instances of the name Micaela is found in the 16th-century Spanish novel "La Celestina" by Fernando de Rojas. The name was also mentioned in various religious texts and records from the time, reflecting its association with the Archangel Michael.

Throughout history, several notable individuals have borne the name Micaela. One of the earliest was Micaela Almonacid y Riquelme (1528-1595), a Spanish-born Roman Catholic nun and the founder of the Order of the Immaculate Conception. Another historical figure was Micaela Bastidas (1744-1789), a Venezuelan patriot who played a significant role in the independence movement of her country.

In the 19th century, Micaela Villegas (1843-1898) was a Mexican poet and writer known for her contributions to the Romantic literary movement. Micaela Ferrer (1847-1935) was a Cuban revolutionary and feminist activist who fought for women's rights and Cuban independence from Spain.

More recently, Micaela Portilla (1888-1976) was a renowned Spanish actress and singer who performed in various theater productions and films during the early 20th century. These are just a few examples of notable historical figures who have carried the name Micaela.