Qasim bin Muhammad said: I asked Sayyidah Aishah (may Allah be pleased with her) about the name of Abu Bakr (may Allah be pleased with him), and she said: "Abdullah." I said: But people call him Atiq. She said: "Abu Quhafah had three sons; he named one Atiq, the second Mu'aytiq, and the third Mu'taq."
Hadith Referenceالمعجم الكبير للطبراني / العشرة / 6