It is also a Portuguese name, even though it is getting less common.In the following link you can find some examples of Portuguese, Brazilian and Goan personalities with that name. https://pt.wikipedia.org/wiki/Rosendo
Rosendo Amor Esparza (1879 — 1970) was a Mexican surgeon and medical researcher, better known in his time as the “Prince of Surgeons” for pioneering multiple surgical procedures such as the epidural and "Raquianestesia".
Rosendo Balinas Jr. (1941 – 1998) was a chess grandmaster from the Philippines. FIDE awarded him the International Master title in 1975 and the International Grandmaster title in 1976. He was Philippines' second chess grandmaster. Balinas was a lawyer by profession, as well as an award winning chess writer and journalist.
Rosendo Ruiz (1885 – 1983) was a Cuban singer, guitarist and composer, considered one of the founders of the trova. He wrote over 200 songs in a variety of styles ranging from canción and bolero to guajira and bambuco. Although he was a popular performer, founding several successful groups, he made very few recordings. He lived for almost a century, having a great influence on the music of his country.
This name seems to be the name of villains in Spanish soap operas 'novelas', so it has a negative connotation in Latin America and is not very popular. This is my father's name and he hated it growing up, and still does. My grandmother, who was very traditional, gave him this name because it is his nameday for March 1, the day of his birth. Just his luck.
In the following link you can find some examples of Portuguese, Brazilian and Goan personalities with that name.
https://pt.wikipedia.org/wiki/Rosendo