Some useful tips to use to write a blog entry about a historical figure are:
Mention the name of the historical figure
Write in an expressive manner
Mention any achievement that this historical figure has
List out some contributions this person has made in history
Mention his birth and early school development
List how he died (if he/she is dead)
<h3>What is a Blog?</h3>
This refers to the written work that is found on online forums that talk about a wide range of topics and have feedback from the visitors or users of the forum.
Hence, we can see that although your question is incomplete, I gave you a general overview about the topic so you can have a better understanding of the concept.