The personal finance blogging space is very busy, but the financial independence movement is relatively new. Although there were people writing about this stuff decades ago, they were well before their time and before the age of the internet.
Over the last 10 years and especially over the last few years, the FI community has really grown. Here are just a few of blogs that I particularly enjoy.
FinCop (Financial Cop Blogs)
A US-based site containing a directory of personal finance blogs. I find the newsletter the best part as they scan hundreds of blogs and select the best few articles to read on a daily basis.
Humans of FI