Further I showed you an independent piece of corroboration about whether the Sultan had to donate in secret, so it's absolutely not single-sourced to "one anecdote forty lears later by the Sultan's son."
Here's more corroboration by Drogheda people (and former President McAleese) that the Ottoman famine relief ships did in fact land in Drogheda (and inexplicably, not Dublin): https://www.aa.com.tr/en/europe/ireland-remembers-how-19th-c... Since there is zero reason to waste time sailing urgently-needed food aid ships north past Dublin to a smaller port (Drogheda) from which it would take longer to distribute, that raises the obvious question why they did that. Go look at any map of Ireland to verify that, instead of mocking that.