My Take
I agree with Cornelius on much of his interpretation - Aries provides the Ram (sheep) and it's ruler is in the eighth in a Water sign - death by drowning seems to be a good interpretation and fits the observed event. Mars is also very near the South Node, which is considered unfortunate in traditional Astrology, emphasising Mars' very poor condition. by placement.
My problem is that I use traditional rulers and so can't use Neptune as Lord 8. Moreover, Pisces is the sign of the deep sea, not the sea shore, which is Cancer. I would have to use Jupiter and where is it? Why it's in Cancer! Death (Lord 8) waits on the sea shore. Jupiter may in general be benefic but as Lord 8 he can be malefic and we would expect Jupiter to kill by excess - drowning is an excess of fluid in the lungs. Jupiter also trines (though out of sign the Sun/Mercury conjunction. and hence the Ascendant ruler. Incidentally Jupiter rules all cloven hooved animals, such as sheep.
So traditional rulership works better at symbolising the observed event (IMHO) but no doubt it could be objected that that doesn't mean it must better symbolise the religious dimension.
Well Jupiter is the natural ruler of religion, so that's a good start. I think the Easter mention is a red herring, Easter follows the first full Moon after the Equinox (both ecclesiastically defined, rather than astronomically) but the equinox itself symbolises the risen god , as the Sun returns from its Winter exile. The Sun is separating from the trine with Jupiter, indeed many traditional astrologers would say that the Sun's entry into Aries marked the end of the aspect, and the Sun conquering death (Lord 8) - This is further emphasised by the position of the Sun on the ninth cusp - leaving the eighth house of death.
I could go on, the chart is cast on a Saturday, the day of Saturn, and at the hour of Saturn. Saturn is the general ruler of death. (Cornelius clearly says the event occured on a Saturday, despite his annotation to the chart asseting it was cast on a Friday). So we could go on to explore the role of Saturn in the chart, near the North node of resurrection and ruling the Moon, Lord 12 and ruler of Jupiter).
I'll look at Cornelius' second event in my next post but I hope that I've shown that you don't need modern rulerships to reach the same interpretation.