Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 1 year ago

Ahmad ibn Hanbal is considered among the Hanbali sect as the most important in Ilm al-Rijaal.
There is famous book ( Tabaqaat al-Hanaabilah)طبقات الحنابلة لابن أبي يعلى complied by Ibn Abi Ya'la who classified the Hanbali Ulama in to six degrees.

Ahmed Ibn Hanbal died on 241 Hijri. His sons Abdullah and Salih are considered prominent after him.