Fermat did not go mad with his new found wealth. He continued working as an attorney and continued with his mathematics.
*In 1630, when he was 22 or 23 years old, Fermat paid a huge sum of money to get a senior legal position in the High Court of Toulouse. This was a job for life. He also became a nobleman. He could now use the aristocratic name Pierre de Fermat rather than simply Pierre Fermat.
*In June 1631, aged 23, Fermat married his cousin Louise de Long.
*Eventually Married and had five children