Premise: Alfred Edward "Alf" Garnett is a fictional character from the British sitcom "Till Death Us Do Part" and its follow-on and spin-off series "Till Death..." and "In Sickness and in Health". Alf also starred in the chat show "The Thoughts of Chairman Alf". The character was created by Johnny Speight and played by Warren Mitchell.
Hypothesis: Johnny Speight had named it differently before finalising Alf.