Dumfries 2nds, Nunholm, also claimed a Saturday win in the West Second Division at Motherwell and by 7 wickets.
The Thornely father and son combination initally restricted the home side with Sam taking one wicket and Sean two. James Cox and Hyder Hussain also applied pressure with a wicket apiece and thereafter spin took the wickets with Harith Hassan taking one and Vaughn Staples cleaned up the tail with three wickets for a final total of 101 all out.
Nunholm then controlled the subsequent chase. Opener Mat Williams scored 32 not out. Max Corbett-Byers got the side within range with a swift 38 and Sean Thornely added 20 as Nunholm completed a comfortable victory.
Online scorecard - wdculive.com/match/137111-6112204/scorecard