I've been following the lolcow thread on this guy for the past few days, and they've been swapping screenshots from the wayback machine of a blog from 2012 called "corpse-husband". I'm not convinced it's him, but I'm not really convinced it isn't, either. So, that means that either this is corpse husband:
View attachment 2035587
OR, it's a random emo kid who was into corpse bride. Both are possible.
The corpse-husband url now doesn't resolve to anything, meaning that either the blogs URL has been changed, or that it's been deactivated fully. After a URL change, tumblr blogs are pretty hard to find, however in the 'notes' underneath posts, the URL will change to whatever it currently is, meaning if you find a post that the account liked or reblogged, the current name will pop up underneath- the problem with this being that the post might have a lot of notes, so it'll likely be near-impossible to find.
One solution to this is finding a post that doesn't have many notes! On
this early copy of the blog, there's a post with 28 notes, originating from the blog 'cutthiscity', and reblogged from 'zeldac0re' on July 28, 2012. cutthiscity has since been deactivated, so I looked for zeldac0re, which was pretty easy- some googling led me to their new URL very quickly (they're now cosmicrosequartz)
From here, all you need to do is look at the archive of the blog, go to that day, and find that post, which I've done
here.
Only 5 people reblogged this post from them, which gives us a nice short list. 'vanfist-blog', 'depravedbeings', 'gin-182', 'modifiedfiction', and 'lenasooph'. The last 3 appear to be women, which leaves us with 'vanfist-blog' and 'depravedbeings'. I don't think it's vanfist, because I had a look at other posts from that day and they're just not the same, and depravedbeings I'm not 100% sure about, since tumblr doesn't seem to want to let me go on their archive- but when I search for specific tags, they don't seem to line up with the corpse-husband blog.
This means that the corpse-husband blog has been deleted. The wayback machine copy of the blog shows it as being unavailable by 2014, so whether this means the blog was deleted between 2013 and then, or it means the URL was changed at some point and
then deactivated, I'm not sure, either is possible. I'm not sure when he started using the corpse husband name on twitter/youtube, so it's possible he tried to nuke that blog, and move on to there without changing his name, or again, this is just some random emo kid who wanted rid of his blog.
The "Joshua Grant" name might be worth following up on, anons on lolcow were saying it was just the tumblr theme creator, but I can't find any trace of tumblr themes made by a Joshua Grant, and it shows up on 2 iterations of the blog, both using different themes.