Estanoa
https://www.rugbyleagueproject.org/players/estanoa-faitala-mariner/summary.html
& Antioch
https://www.rugbyleagueproject.org/players/antioch-faitala-mariner/summary.html
are sibblings
https://18thman.com/players/estanoa-faitala-mariner/
https://www.facebook.com/li.amanaia.lorenzo.kaisara/posts/a-huge-thank-you-to-the-faitala-mariners-family-asomualemalama-tiafau-sinave-fai/8884328678356604/
Updated, but they are not related to Raymond?
They are probably related somewhere, but they are not siblings. Raymond was the only boy amongst his siblings, therefore he cannot be a sibling of the other 2.
https://www.nrl.com/news/2015/05/02/warrior-faitala-mariners-secret-talent/