Born in Bamberg, Germany, I joined the Jesuit order in 1555.
I attended the University of Coimbra in Portugal, where I was tutored by the famous mathematician Pedro Nunes.
I am responsible for the adoption of a rigorous mathematics curriculum within the Jesuit order, despite it being an age when mathematics was often ridiculed by philosophers and theologians.
I was the first person to use decimal points in publishing goniometric tables used to measure angles for computing altitudes of objects.
As an astronomer who knew and respected Galileo, I stubbornly backed the geocentric model of the solar system, even though I admitted there were problems with a view of the planets rotating around the earth.
I was the main architect of the modern Gregorian calendar, being assigned the task to halt the slow drift of the Church's holidays away from the seasons of the year.
Answer:
Christopher Clavius (1538  1612)
