How to get the CreatedByAccount of a custom object using REST

Topic by Steve Flynn

I have a custom object which has the CreatedByAccount predefined field in it.

In the object designer it tells me it is a Menu type.  In ROQL it tells me it is a table of subtype Account.

I have tried the following:

https://example.custhelp.com/services/rest/connect/v1.3/CTI.Event?fields=CreatedByAccount

CreatedByAccount

createdByAccount

createdbyaccount

All three of the above with the following appendages:

.lookupname

.LookupName

.DisplayName

.displayname

.name.last

I have looked at ...metadata-catalog/CTI.Event and that gives no clues either.

How do I get the CreatedByAccount of a custom object using REST?