I used to manage 2 personal websites. One as a personal page vCard. Resume, portfolio and contacts (this one). Another one as a blog (blog.alii.pro).
It didn't make sense to have 2 websites, 2 repos and one domain. The purpose was only one, to promote myself
Yesterday I bought a template from themeforest.net. Which included blog and personal page layouts.
I highly recommend to take a look at themeforest to find a good templates for a different purposes.
Now I have 1 domain, 1 repo and 1 website. And it all freely hosted on GitHub Pages! Profit!