The Microformats 2 WordPress plugin was causing spurious HTML tags to be visible around my name next to these posts. I’ve disabled it for now. But looking at the page to get that link, I’m realising that maybe I don’t actually need it:
For all themes that do not declare support for Microformats 2, this plugin attempts to add Microformats to areas that are accessible through filters and actions.
I think the theme I’m using, Minnow, probably supports microformats already. Though I confess to having only slight understanding of what microformats are for. I added that plugin while moving the site the other day, along with all the #Indieweb plugins.