Hi Guest, yes I am aware of this, and mention it in a footnote (note "a") in the article, currently written as follows:

"2 sources, which may have copied from each other (Low, 2003 and trove.nla.gov.au), state that Sally's grandmother was born in Belfast, which conflicts with the published statements of John Meredith (who undoubtedly knew Sally best) and others that Sally's grandmother came from County Kerry in the west of Ireland. In the absence of other evidence, it is presumed at this time that the statement by Meredith, etc. is correct and that the sources with conflicting information are in error."

I guess I could turn that around but would still prefer something more definitive to go on...