Both players were on loan at Widnes from Wigan for the majority of the season, but in a boost for Widnes, both Stefan Marsh and Joe Mellor agreed to permanent deals with the club, for the next 2 years.
Marsh, 22, is a centre who played 23 games for the Vikings upon their return to the Super League, whereas stand-off Joe Mellor, 21, had two loan stints with Widnes.
Dennis Betts, Widnes coach, is pleased to have secured two year deals for the duo.
â€œWe were always hopeful we could retain Stefan. Despite having an option to remain at Wigan, he has really enjoyed his time at Widnes.
â€œHeâ€™s a strike centre and, while weâ€™ve been really pleased with how he has performed so far, we realise thereâ€™s plenty more to come from him.
â€œJoe found his Super League opportunities limited at Wigan but, from day one, his attitude and application at Widnes have been outstanding.
â€œHe is a committed person and a quality professional, who leaves no stone unturned in his preparation and takes nothing for granted on the field.â€