Heirloom pear discovered in 1770 in the yard of the local schoolmaster in Aldermaston, England. Known first throughout Europe and the world as Williams Pear or Williams Bon Chretien, now by the name of the Massachussetts nurseryman who popularized it in the colonial US. Large and appealing fruit with very sweet and tender flesh. Picked green, but enjoyed when skin ripens to a soft yellow (sometimes with a slight blush). Tree bears early, heavily, and regularly. Excellent fresh or canned. Harvest: August 20th. Partially self-fruitful.