Sometimes a narrator’s kunya corresponds to his father’s given name. The text gives Abū Isḥāq, Ibrāhīm ibn Isḥāq al-Madanī: Isḥāq occurs both in his kunya and as his father’s name.
Such agreement may tempt a reader to rearrange Abū and ibn and invent a nonexistent genealogical sequence.
The solution is to record the complete personal name, kunya, and lineage separately, then retain their documented order. A name occurring in a kunya should not automatically be treated as a new link in a paternal line.