Hmm! Just shows you can't rely on everything you read on the web.
The last bit of info was from:
http://www.queenslandholidays.com.au...o-visit/comet/
Of course, as we know (especially those smarty-pants who got top marks in the 3rd Birthday Competition) that the last Halley appearances were in 1835, 1910 and 1986.
Actually the comet Ludwig Leichhardt saw (on 28 Nov 1844) was C1844 U1 (Laugier) / 1844 II.
I don't think I'll bother informing queenslandholidays.com