Board Thread:Speculation House/@comment-26259025-20150419120747/@comment-24994749-20150523172344

If wikipedia can be trusted:

"Some post-Homeric sources claim that in order to keep Achilles safe from the war, Thetis (or, in some versions, Peleus) hides the young man at the court of Lycomedes, king of Skyros. There, Achilles is disguised as a girl and lives among Lycomedes' daughters, perhaps under the name "Pyrrha" (the red-haired girl)."

"In the Trojan War cycle of myth, the wedding of Thetis and the Greek hero Peleus is one of the precipitating events in the war which also lead to the birth of their child Achilles."