Helena was the elder daughter of the lord of Nablus, Philip of Milly, and his wife Isabella (Elizabeth).
[2] In 1161 Helena's father ceded his lands in Nablus to King Baldwin III and received the lordship of Transjordan in return.
[7] Helena's father, Philip, relinquished the lordship of Transjordan and entered the Order of the Temple in 1166.
Historian Bernard Hamilton argues that Walter's cession of Beirut to the crown at this time was a condition imposed by King Amalric to prevent the merger of two great fiefs.
[7] Helena had died by 18 November 1167, when Walter issued a grant to the Order of Saint Lazarus for the repose of her soul.