Remove name of author in page title

Hi,

As it is a single author (admin) website, I do not want to show reference about author, as far as records and category are concerned, I was able to hide reference of author, however:

As you'll see in this screenshot, in the page title and breadcrumb, the name (username) of the author is present, how can I remove/hide the name of the author please?

Thanks,

Tomy