A good introduction courtesy of the blog Interesting Literature, on the origins of blank verse. The post explains that blank verse was invented by the Earl of Surrey, and explores the differences between blank and free verse, blank verse being closest to everyday speech.
To read the article please visit, https://interestingliterature.com/2020/02/what-is-blank-verse-introduction/.
K Morris - Poet 
Thank you for sharing Kevin.
You are welcome, Gabriela. I must confess to getting confused at times as to the distinction between blank (as oppoesed to free) verse). I guess that poets often use a combination of forms, sometimes without even being aware (at a conscious level) that they are doing so.
Best wishes, Kevin
I get confused too and most of us use a combination of forms. Anyway I am glad I read the piece and glad you shared it.
Have a beautiful weekend.
You also, Gabriela, have a lovely weekend. And I’m glad to know that its not just me who gets confused!
Best wishes, Kevin
Thank you Kevin.