East Lincs Combination Division Two side Rovers held a 2-1 lead from the first leg going into their home leg on Saturday, and were in no mood to relinquish it.
They eased past their Division One opponents 3-0 to seal a 5-1 aggregate win and book a last-eight tie with Marsh Rovers.
Division One leaders Tetney Rovers thrashed Grimsby Borough 4-0 in their second leg, winning 5-0 on aggregate, to seal a quarter-final meeting with title rivals Ludford.
Back in the league, Graham West’s double gave Louth Old Boys Vets only their second league win of the season in Division Three, 2-0 at AFC Grainthorpe.
And Alford Town Reserves conceded their match at leaders GB Kitchens.
Selected fixtures (Saturday, 2pm) -
Division One, 2pm: AFC Holton Le Clay v Louth Town Reserves; Grimsby Borough Development A v Louth Old Boys.
Division Two: Louth Old Boys Reds v Manby FC.
Division Three: Louth Old Boys Vets v Marsh Rovers.
East Lincs Cup, semi-final second leg: Alford Town v Sutton Rovers (Sutton lead 4-2).