These are the letters of the Roman alphabet. Although they aren't exactly the same as the letters we use today, they are similar. This is because our alphabet is based on the Latin alphabet, and the Romans spoke Latin.

The Romans hardly ever used the letters K, Y and Z, while the letter J was the same as I, and U the same as V.

In the Roman alphabet What If would be....

What would your name be using the Roman alphabet?
Try writing some other things using this alphabet - the names of your family or your address - and then see if people can understand it.