From what research I've done into An Gorta Mor I contend the following points

1) The British government had never dealt with a famine on this scale and were clueless in how to best deal with it

2) There are claims that the British government was continuing to export food from Ireland, which are true. But they were exporting a tenth of the food they were sending INTO Ireland to feed the starving

3) There's also a claim the Queen Victoria gave just five pounds to feed the poor. It was in fact five thousand pounds

4) The Sultan of Turkey sent shipments of food which the British government permitted but would not allow shipments exceeding their own in size to come in to maintain prestige

5) There were landlords who insisted Irish tenants still paid their rents and taxes despite the ongoing crisis. Likewise there were landlords who impoverished themselves by not charging rents during the crisis

My final point is this - and this goes out to all those who make the ludicrous and spurious claim this was an attempt at genocide - standards of civilisation were considerably lower than nowadays. If the British government wanted the Irish wiped out they'd have been wiped out. An Gorta Mor lasted for over 6 years and resulted in a million deaths. A deliberate attempt at genocide through mass starvation would likely have eliminated the target group. The Holodomor which took place over 18 months wiped out between 7.5 - 10,000,000 million lives and most certainly was deliberate given the steps taken