Right.
Got no disagreement from me about the name coming from a fight and a subsequent joke about it. But there is also some more to it. For example, among many other sources, according to a well-researched paper published in 2009 by John Cummings titled, "The Origin of the Name Sebastopol", which you can read
here, there was indeed a considerable amount of local admiration for the Russians holding out against the English and others. Just one example (and from that paper linked above) below is a description of an event in San Francisco celebrating the siege of Sevastopol, with quotes from a correspondent for the Petaluma Journal in 1855:
While everybody enjoyed themselves immensely, the correspondent described the picnic at South Point as being more like “an Irish Fair.” “Torn coats, black eyes and bloody noses were prominent and wine bottles, loaves of bread and fowl flew around among the combatants.” “A roast chicken struck Council Dillon in the breast.” The activity at the picnic occurred among the flags of the participants. The picnic event committee apologized to the guests in the San Francisco morning paper for the actions of the picnic celebrants, and the apologetic article also stated that a crowd of at least 5,000 people had carried American and Russian flags and to show their sympathy for the Russians by marching to the residence of the Russian consulate and his family in San Francisco. (The estimate of 5,000 people was a very large crowd considering that the stated crowd was about one tenth of the entire population of San Francisco at the time.)
Incidentally, if there was no admiration for the Russians holding out round here then why were three other Northern California towns named Sebastopol right around that same time? Were there multiple coincidental fights and jokes with no connection whatsoever to the Russian city that was so prominent in the news at that time?
All this is really beside the point. I'm still waiting for an explanation of the source of the pronunciation "SebastoPOOL" (and with it the Liverpudlian pun reference to a puddle). It's agreed that local legend has it that the town name came from a fight. (Can’t yet find confirmation it was a bar fight, but that would seem to make sense if there was a bar here at that time.) Regardless, it still confirms the name coming from the Russian (at the time) city of Sevastopol, because, as the story goes, one of the fight combatants held out in a store and the joke referenced the holding out as in the siege of Sevastopol. But it's still "SebastoPOL,” with the Greek root word "pol" (or "polis") for "city".
So I'm just curious, where does the "pool" come from? Is it simply a mispronounced colloquialism that spontaneously emerged at some point in the past? (With apparently some rather ardent local supporters still today.) Or is there some other reason for it?