Pear is tricky. It is hard and dense, and beautiful, but the grain is weird, almost flaky.
Any mulberry is first rate bow wood, in my book. If you can get a branch or sapling of white mulberry at least 3" across, or a slightly bigger log or red mulberry, that is good stuff. Red likes to be taken down to a ring, it seems, while white can be treated like good quality whitewoods.