Is there a punctuation mark for having had two different, similar names?

So that's like the Corporate Ministry. It was known as the Ministry before merging with the Corporation. To discuss the exploits of the Ministry both before and during the Corporate Ministry, would it be "(Corporate) Ministry"? That would suggest that "Ministry" is an abbreviated "Corporate Ministry".

There needs to be a punctuation mark that's like "yeah, the Ministry, and when they were the Corporate Ministry, too!"