He pleaded guilty to 19 charges of sexual assault on a child and one of causing a child to watch a sex act.
Sentencing, the judge told Corfield his offending had been persistent and serious.
A paraplegic has been jailed for five years after admitting sexual abuse involving children.
Both victims of William Corfield, 47, of Clatter, near Caersws, Powys, were aged under 12, Mold Crown Court was told.
In 2002 the garden at the rear of the Mill was a small paddock with a couple of fruit trees and some sheep! We had no fixed plans and the gardens have evolved over the last 15 years.
This garden has completed its openings for the National Garden Scheme this year. Or why not favourite this garden below so that you can get emails sent to you when it is next due to open?
On this day, this garden is open by arrangement, which means that you will have to contact the owner to arrange visits for groups.
The poles and roses were added in 2012 for our daughters wedding.
We have planted fruit, nut and decorative trees over the last 15 years and have made borders and a vegetable garden which you see today.