In some books, they write Ibn Taymiyyah the grandfather, in some the father, and in some "the son." So who is the Shaykh al-Islam?

Question:
He says: Honorable Shaykh, may Allah grant you success. In some books, they write Ibn Taymiyyah the grandfather, in some the father, and in some the son. So who is the Shaykh al-Islam among them?

Answer:
We have Ibn Taymiyyah as a family; the Taymiyyahs are a house of knowledge, a house of knowledge in its entirety. But two of them are famous: Abu al-Barakat Majd al-Din Ibn Taymiyyah, this is the grandfather, 'Abd al-Salam Ibn Taymiyyah, this is the grandfather, the author of *al-Muntaqa*, the author of the book *al-Muntaqa fi Ahadith al-Ahkam*, and the author of the book *al-Muharrar* in fiqh.
This is the grandfather, 'Abd al-Salam ibn Taymiyyah. And the second famous one is the grandson, Ibn Taymiyyah the grandson, who is Shaykh al-Islam Ahmad ibn 'Abd al-Halim ibn 'Abd al-Salam. Ibn 'Abd al-Salam, this is the grandson, that is the grandfather, and this is the grandson. These two are famous in the Taymiyyah family. Yes. So if the grandfather is mentioned, it refers to 'Abd al-Salam, and if the grandson is mentioned, it refers to Shaykh al-Islam. Yes.