Harvard University has awarded thousands of honorary degrees over its history. It's impossible to give an exact number and a complete list of recipients. Harvard doesn't maintain a readily accessible, comprehensive, searchable database of all honorary degree recipients across its centuries of existence. Their records are spread across various archives and may not be fully digitized.
To find information on specific individuals, you would need to search Harvard's archives directly, potentially using their online catalog or contacting their archives department. You might also find some information through biographical databases or news archives from the time the degree was awarded.