André do Avelar

André do Avelar, also known as "Andre dauellar" (, Lisbon), was a writer and professor who published astronomical works at the University of Coimbra. His works sought to explain astronomy, astrology, and the calendar year to the people of Lisbon. Despite his esteem, he would later be sentenced to life in prison by the Inquisition as he was accused of being a Judaizer.

Personal life André do Avelar was born in Lisbon, Portugal, in 1546. His mother, Violante Fernandes, and father, Galás do Avelar, were said to be New Christians from a poor background. They had seven other children: four sons and three daughters. André do Avelar was a mathematics professor at The University of Coimbra for 24 years.

There is limited information about the early life of Avelar, including his work before arriving at the University of Coimbra. It is believed that he was educated later at Salamanca and Valladolid, receiving a Master of Arts degree. He married Luiza de Faria, and they had six children. His wife died in 1600, and he became a Catholic priest despite retaining his Jewish beliefs throughout his retirement. These proceedings allowed investigations of entire households and sought to find heresy using any methods the Inquisition courts deemed necessary. Avelar was pressured to admit guilt for the sake of his two daughters and son being detained by the Inquisition.