Girolamo Cardano born in 1501, Pavia, Italy, and died 1576, Rome, Italy. His life was turbulent, and two of his sons became problems with Girolamo. Girolamo was a polymath, founder of various fields and inventors of several machines, and his interest in areas was Science, literature, Maths, and Philosophy.

He had three sons as the favourite eldest son – Giovanni Battista was born disabilities including deaf in the right ear. Cardano’s second son – Aldo, was a gambler, and he used his father’s wealthy money as he can not repay other people until Cardano disinherited and banished from Bologna.

Giovanni Battista became a doctor according to the article “The Unfinished Game: Pascal, Fermat and the Seventeenth-Century Letter that.. by Keith Devlin.”  He secretly married to a dowerless lady – Brandonia di Seroni and they lived with her parent’s home.  The plot thicken by Brandonia, and her parents were greedy for money from Giovanni and Girolamo. Giovanni and Brandonia had three children from 1557. So many taunts from his wife and her parents, drove Giovanni to poison his wife. Giovanni was arrested and confessed for the crime while Cardano hired the best lawyers to serve the trial. However, it was not successful for Giovanni was tortured in jail, and his left hand cut off later. He was beheaded on the 13th of April 1560 – executed.

Around the 1500’s, the time of creating Deaf Education to many D/deaf children and youths through schools, monastery, and other places. Cardano published his works, including the ideas on how to teach many Deaf and Blind Children in the medical areas. His argument was Deaf and Blind children can read and write/sign without learning how to speak because the Deaf children were capable of using their mind like his eldest son, who became a doctor.

Cardano read the article by Ruloph Agricola. Rudolph taught a deaf child how to communicate orally and in writing in 1470. There is a book called “De inventione dialectica”.  Rudolph believed a Deaf child could find of communicating in the form of sign language.