::::::WCM, why don't you specify the color of Vernet's underpants when he first came to the islands? We're writing a summary here, not telling the full story. We're leaving out a lot of details  why would we include other, less important ones? Although to you Vernet's correspondence with the British is the most important event in the history of the universe, others would consider the fact that he seized three US whaling boats and took them to stand trial in Buenos Aires is far more important  and we're not mentioning it. 
 ::::::But at least you're agreeing to include Vernet's appointment, so that here's my proposal: "After several abortive attempts, Luis Vernet established an Argentine settlement in 1828after seeking authorisation from both British and Argentine authorities. In 1929, the Argentine government proclaimed him military and civil governor of the islands."