The letter B was nothing like the one we use today.
The Egyptians invented the letter B like this:
They write the letter B "Bet". "Bet" meant "house".
The first people to write a simple alphabet wrote it like this:
The Phoenician changed the letter B to be like this:
The Greeks wrote the letter B like this:
The Etruscans wrote it like this:
The Romans wrote it like this:
The Roman B is similar to ours.
There was one more change, the little b.
This was introduced in Ireland much later on.
So now we have:
This is the history of Bs.