The ugliest edit war I've seen involved a less-known adult film star.

Her legal name had appeared in some public court filings, and some user had added it to her Wikipedia page with the reference.

Someone else (purportedly one of her co-stars) had requested removal.

A Wikipedia editor then got involved, and refused to budge from the position the original actress was notable enough to merit inclusion of her legal name.

Cue months of back-and-forth deletions and reversions.

Finally, I think a year later, someone quietly edited the legal name out and it stuck.

Sometimes people with a little power are the greatest assholes. Probably because they sought the little power.