Louise Bonne is an old French pear variety, with a surprisingly modern "bi-colored" appearance - the yellow/green skin usually has an attractive red flush. As a bonus the blossom is also more attractive than most pear varieties.
Louise Bonne was rated by the Victorian fruit enthusiast Robert Hogg as "A most delicious pear" - a description which is just as valid today. The flesh is sweet and melting, with a pronounced pear flavor.
Judging the right time to pick can be tricky, but keep a close eye on it from late August onwards (in the south of the UK, a bit later further north) and pick the pears when they are flushed but still quite hard - then ripen in a fruit bowl.
Louise Bonne is a reliable cropper in most situations but like most pears originating from France it prefers a sunny aspect if possible.