NASHVILLE (AP) — Grammy-winning duo The Civil Wars will postpone a piece of its European tour.

A news release Friday morning says the delay in shows from March 26 through April 4 is due to a serious illness in the band's immediate family, but doesn't give further details.

The popular duo is made up of Joy Williams and John Paul White.

The trip to Europe is their first tour overseas. They'll reschedule shows in Germany, France, Belgium, Switzerland, Sweden, The Netherlands and Turkey. The news release says new dates will be announced next week.

The Southern Gothic folk duo has charted one of the more interesting courses to fame, winning fans like Taylor Swift before taking two Grammys in February for best folk album and best country duo/group performance.