Guo Shoujing was 69 this year and would die in a further 16 years.
Ramon Llull was 65 this year and would die in a further 16 years.
Jacob ben Tibbon was 64 this year and would die in a further 12 years.
Shams al-Din al-Samarqandi was about 50 this year and would die in about a further 10 years.
Ibn al-Banna was 44 this year and would die in a further 21 years.
Al-Farisi was about 40 this year and would die in about a further 20 years.
Zhu Shijie was about 40 this year and would die in about a further 20 years.
William of Ockham was about 12 this year and would die in about a further 48 years.
Levi ben Gerson was 12 this year and would die in a further 44 years.
Thomas Bradwardine was about 5 this year and would die in about a further 49 years.

There were 10 mathematicians in our archive alive in the year 1300.

800 BC - 700 AD   600 - 1500   1450 - 1700   1650 - 1800   1750 - 1850   1825 - 1900   1875 - 1960