Richard Dunwoody
Another Thrale claim to fame! I have discovered that - racing's all time most successful jockey [1] - Richard Dunwoody MBE [2], is a Thrale.
His mother is Gillian Thrale, father George (surname unknown). His maternal Grandfather is Richard (Dick) Thrale b.1885, who was also a horse trainer.
Other than the two links here, I don't know anything else. I've never met them and I have no idea where they fit into the Thrale.com family tree [3].
If you know anything further do let me know. If Richard Dunwoody or one of his family reads this, do get in touch, I promise Thrale.com will respect your privacy.