I can see a couple of errors in the Wikipedia piece. According to the sleeve notes to their latest album John and Sue made five albums together, but there were other projects they both appeared on, so it is complicated. John has a full discography on his website.

Benji is their second son (and also plays on the album).

They are both lovely people as well as superb musicians, and it is a delight to hear them playing together again on the new album.