He is the Imam Al-Hafidh Al-Thiqah Abu Bakr Ahmed bin Muhammad bin Ishaaq bin Ibrahim bin Asbaat Al-Hashimee Al-Jafiree Ad-Dainoree, famously known as Ibnus-Sunni.
He was born around 280 AH. He travelled to various lands to seek knowledge.
From amongst his sheikhs were:
1.Abu Khalifah Al-Jamhi who is considered to be from amongst his major teachers and sheikhs.
2. Abu Abdur-Rahmãn An-Nasa`ee,
3. Abul-Qasim Al-Baghawi, and many others.
Ibnus-Sunni wrote many books including:
1. Amalul-Yawm wal-Lailah which is a book of remembrances and supplications from the Qur`an and the Sunnah,
2. Kitab-Fada'ail-A`maal,
3. As-Siratul-Al-Mustaqim.
The grandson of Imam Abu Bakr As-Sunni narrates on the authority of his uncle `Ali bin Ahmed bin Muhammad bin Ishaaq that: “My grandfather was writing Ahadith, he then put his ink pen inside the pipe of the inkwell, raised his hands and supplicated to Allah and then passed away.” He died at the end of the year 364 AH.
Refer to Siyar Aalamun-An-Nubala (16/255) and also Tadhkiratul-Huffadh (3/939), both by Imam Al-Dhahabi.
Hope that helps.
For Imam Ibn Taymiyya see the book by the Muhaddith `Umar ibn 'Ali al Bazzar called "The Virtues of Ibn Taymiyya". It is available for free download online. Search on google.
Wa salam.
, can anyone give me a biography of him? It seems really hard to find his bio at the internet. He's a narrator of hadeeth so I wanted to know more about him.