From the above it appears that the very first Oxfordshire flying (landing) was on 14th June 1911, and that the first aviation meeting was held on Port Meadow on 24th October 1912. These dates need to be compared with the claims made in the Osford Mail (Times?) articel about Ernest Archer, which refers to Port Meadow, and I will see to that. (28.3.2018).
Yes, well, it is clear that Ernest Archer was indeed flying at Twello, Holland, in October 1910, well before these dates, but that was in his Dutch (National) aircraft which he certainly did not fly over to Oxford in, since hops of short distances of the order of a kilometer or two at most were all that he was doing. Though Bleriot himself had crossed the Channel in an identical aircraft in July 1909.(28.3.18).
Please refer to the Wikipedia data on the adjacent slot in this album (go to the arrows at the top of this page and click on the RHS one) about Bleriot himself. It emerges that Bleriot's technical success came after much labour on TEN earlier versions of his Type XI monoplane, and funding resulting from his business success with vehicle lights. (30.4.18)