Limitations in your case:
- text block are limited (no mention, no link, no format, only basic text), here is a suggested FR :New relation type: Block
- Content cannot be fully displayed in any view (FR here : Option to show the content (blocks) of an Object in Set view (full or partial))
- No tag or linked block (I cannot find the related FR, I’ll edit it later)
Depending on the length of your memory, you can create a collection with the name, a date and a object relation to link to Human object. And create view to filter by what you want 
And because it link to Humans object so you can create query to see all activity about someone.
Note that you can also mention object, like Humans, into a page with “@” :
This will also link the human to the page but not to the exact block.