The first sentence is stretching grammar a little but I’d say it’s still grammatical. However, I would express it as follows:Originally Posted by vvaann
At one time, he used the alias the Godfather. (Note: no need for “known as”)
The second one is the one that doesn’t look right to me. I think it should be:
Corlerone is used by friends as a term of affection and of respect.
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