James “Bluebeard” Watson was a Southern-born chameleon and lothario who married at least 25 women and killed a third of them. He had so many aliases that he sometimes lost track of who he was at any given time. His real name and his true birthdate were unknown even to him. From the turn of the century until 1920, Watson eluded law enforcement officials, leaving a bloodstained trail of dead wives in cities from Canada to Washington to Idaho to Los Angeles.

SOURCES

The Case of J. P. Watson, the Modern "Bluebeard"; Bryant Hoag and Edward Huntington Williams; Journal of the American Institute of Criminal Law and Criminology; Vol. 12, No. 3 (Nov., 1921), pp. 348-359 (12 pages)

American Bluebeard: Lies and Dead Wives
by Alene Burnett-Reaugh

https://www.sfgate.com/sfhistory/article/james-bluebeard-watson-serial-killer-14490554.php

https://my.clevelandclinic.org/health/diseases/22470-atypical-genitalia-formerly-known-as-ambiguous-genitalia