Cornwell's association with Gloucester Rugby goes back to the early 1990s when he started to make his way through the junior ranks at Kingsholm having started his playing career at Old Richians.
He made his debut in the 1994-5 season and went on to make nearly 200 appearances for his home town club, enjoying a testimonial year in 2005.
After he hung up his boots, he moved into coaching and has been involved with the successful Gloucester Rugby Academy set up for the past few seasons as well as a stint as Head Coach at Cinderford.
His new role will see him become Rugby Academy Forwards & Defence Coach for Hartpury reporting to the Director of Rugby.
Hartpury's Director of Sport Matt Birch said today that Cornwell's appointment is an important one for the college:
"We are delighted to have appointed someone with the skills, knowledge and experience of Mark C to work with both our junior and senior academy sides.
"This appointment is further evidence of the growing and strengthening partnership between GRFC and Hartpury College."
The Gloucester Rugby first team squad have, of course, used Hartpury as their training base for several seasons now and recently agreed a deal to remain there for a further ten years.
As part of the arrangement, Gloucester have recently moved into a brand new, bespoke facility befitting of a Premiership rugby club.
A state of the art gym, analysis suite and recovery facility means Gloucester Rugby now boast the kind of base befitting of a club with the highest ambitions.
However, of equal importance is the role the College plays in the development of the players as individuals away from the playing field.
Gloucester Rugby Head Coach Bryan Redpath explained:
"The partnership with Hartpury is really starting to reap rewards for Gloucester Rugby.
"Individuals such as Henry Trinder, Jonny May, Dave Lewis, Charlie Sharples and have all come through the Hartpury educational system and become first team regulars.
"More recently, Ian Clark and Ryan Mills have became the latest to wear the Cherry and White of Gloucester. The future looks bright."
Now with the Advanced Apprenticeship in Sporting Excellence (AASE), and closer links than ever to Kingsholm, both parties stand to benefit hugely in the coming years with Cornwell's appointment the latest move to strengthen the bond.