The trio had also triumphed at the opening meeting at Newnham Park last month.
Sunday’s event also included the Cornwall Cross Country Championships and there were county medals for Tamar Trotters’ Jacob Landers and City of Plymouth’s Lucas Sweeney, Tilly Daly and Daisy Elliott.
Hennessy was dominant in the under-13 boys’ race, taking victory in the mud by 19 seconds. His club colleague Freddie Whybrow was sixth in the same category.
There were also top 10 finishes in that event for City of Plymouth’s Sebastian Travers, Jack Penney and Jacob Sweeney.
Welsh claimed victory in the under-11 girls’ race. She won by seven seconds, with Tavistock’s Olivia Walkerdine second and Tilly Day third overall and first Cornwall athlete.
City of Plymouth’s Margot Goodspeed was fourth, with her team-mate Daisy Elliot fifth overall and winning silver in the Cornwall Championships, with Genevieve Stone seventh.
Erme Valley Harriers’ Luke Hayes produced a strong run to finish third in the under-15 boys’ event, with City of Plymouth’s Isaac Lamerton (6th) and Tavistock’s Rueben Sebag-Montifiore (9th) also in the top 10.
There was also a third-placed finish for Tavistock’s Zoe Bigham. Her’s came in the under-13 girls’ race. Just behind her in fourth was City of Plymouth’s Elsie Goodspeed.
Landers impressed in the senior men’s race, finishing fourth overall and winning the bronze medal in the Cornwall Championship.
Plymouth Harriers’ Johnny Gilby was seventh and second M40, with Erme Valley Harriers’ Matthew Gilvear eighth and City of Plymouth’s Kairn Stone and Tavistock’s Ben Neale enjoying a good battle and finishing 11th and 12th. Stone did finish as the second M45 athlete.
In the under-17 girls’ race, which was run alongside the senior woman, City of Plymouth’s Molly Gilbey was seventh and East Cornwall Harriers’ Georgie Gilbert was ninth.
Tavistock’s Lamorna Cox took sixth place in the under-15 girls’ event.
Full results can be found HERE
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