Reverting back to your original question regarding the origins of William Searby and "HOLFORD".
My gut feeling is that the place is ALFORD in Lincolnshire - the informant was Irish, possibly had an Irish accent and appears to be illiterate, AND the Registration took place in Australia. Plus we know that there are a number of occurrences of the surname SEARBY in the Spilsby Registration District, which covers the town of ALFORD.