still won't let me log in as keberoxu ...

A funny thing about the above link.

The link to the page of tour dates for April, 2018 looks legitimate.
I have followed some of the links on the tour page to the venues.
Each time I follow a link, it connects me to
a solo performance by Martin Carthy.

However, this page of tour dates comes FLi Artists which represents the artist.
The FLi Artists page for Martin Carthy has a link to the tour page,
and it has a link to
"Artist's Website" -- but THAT link goes to Eliza Carthy's site,
and looking at her pages just to make sure,
none of the Martin Carthy dates for April are there

--which only serves to confirm that Martin Carthy is appearing solo,
without Eliza Carthy, in the US in April.