Ibn Taymiyyah
A strong influence on Ibn Taymiyyah was the founder of the Hanbali school of Islamic jurisprudence, Ahmad ibn Hanbal. Ibn Taymiyyah was trained in this school and he had studied Ibn Hanbal's Musnad in great detail, having studied it over multiple times. Though he spent much of his life following this school, in the end he renounced taqlid (blind following).