....United on Wednedsday night.
Marske took the lead after 20 minutes when Chris McGill pounced on a defensive mistake and fired home, but Shildon levelled just after the break when Sam Garvie crossed for Adam Johnston to head in.
Battling Marske regained the lead when Karl Charlton found the net from the edge of the box, but Shildon levelled when Marske defender Adam Wheatley put through his own goal.
Shildon looked as if they would go on and win, but they failed to clear a long ball, and Marske sub Lev Yalcin grabbed the winner and give Marske three precious points.
Shildon manager Gary Forrest said: "We were very poor defensively. We conceded three soft goals and at the moment we always seem to be chasing games."
Marske manager Ted Watts said: "I'm really pleased. It's been coming for a while. It was a great team effort, and the players never let their heads go down."
Darlington 1883 beat Billingham Synthonia 4-1 at Heritage Park.
Free-scoring Darlington reached the seventy-goal mark for the season with a comfortable win.
Stephen Thompson got the landmark goal at the end of a win that was rarely in doubt from the moment that Craig Gott put Quakers ahead after only 6 minutes.
Even though Martin Gray's men soon conceded an equaliser, through on-loan Amar Purewal they re-took the lead midway through the first half from which point there was only going to be one winner.
Billingham Synthonia assistant-manager Lee Tucker said: "I thought we were the better footballing side in the first half, and we gave them a lot of problems, but we gifted them two goals.
“I've got no qualms about them beating us, but I didn't think it was as clear cut as a 4-1 scoreline."
Credit: Ray Simpson