Nearly EVERY model who has photos or videos on the net has them stolen / reposted under another name .
One example you can check easily would be a Model named " Jenaveve" at planet uniform dot com.
She is listed in the INDEXXX.com as Alena from karupspc.com back in 2000 or so.
Do a google and Yandex search on her pictures and you will find her under other names as well.
None of which are valid AKAs.
I think you found " Antonia Sainz" on a site who pirated her work and posted it under an invalid AKA .
Like here where she is listed as "Eva Bar" ---- http://siterip.biz/banana-hotties/5513-ba-video-3597-eva-bar-move-and-masculinity.html