The second is incorrect, as Bob suggested in post #6.
And as emsr2d2 said in post #7 you could also say 'X is known as Y'.
In summary, 'X is called Y' is roughly the same as 'X is known as Y'.
Conversely both
'X is called as Y' and
'X is known Y' (which I've never heard, but which completes the pattern of 2 right and 2 wrong) are WRONG.
The difference between 'known as' and 'called' depends on context. Generally, 'known as' implies a less formal naming:
'I am called "Bob" but at school I was known as "Dad"'. (That was one of the more polite nick-names I had. ;-)) But you can't then conclude that it's 'wrong' to say 'known as' before a given name. Both these are right:
- 'At school I was known as "Dad", but now I am usually called "Bob"'
- 'I am called "Robert" but I am usually known as "Bob"'
That is, the relation of formal to informal depends on
relative values and not absolute ones.
b