So far the first cryptocurrency is bitcoin, even, not only the first bitcoin wallet but the first crypto wallet ever is bitcoin core. Thanks for the link you sent, it was so helpful for me to know when and how bitcoin core started.
There are couple of older cryptocurrencies (
digital currency) that predates Bitcoin, HashCash is one of the most recognized among them.
Some older ones didn't used a similar approach as HashCash or Bitcoin and IMO shouldn't be called "
cryptocurrency".
If OP wants us to google search and read a certain online article that's just been posted, he's succeeded
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)