Early life , where Clifford grew up Rosamund Clifford was the daughter of
Walter de Clifford, a
marcher lord, and his wife Margaret de Toeni. Her date of birth is uncertain. Some sources place it in 1140 or possibly even earlier, possibly due to the traditional identification of Rosamund as the mother of at least one of Henry II's illegitimate children (William the Longespee and Geoffrey, the archbishop of York) - indicating that she had already become Henry II's mistress by the early 1150s. On the other hand,
Gerald of Wales describes her as a
puella (a girl or a young woman) at the time of her death in 1176. She was certainly of age by 1166. Rosamund had three brothers,
Walter (), Richard and Gilbert, and two sisters: Amice, and Lucy. Her name likely came from the
Latin phrase
rosa mundi, meaning "rose of the world." Clifford was first raised at her father's Clifford Castle, then sent to a
convent of
Benedictine nuns in
Godstow Abbey for education.
Henry II's mistress Clifford was reputed as one of the greatest beauties of the 12th century. Her relationship with
Henry II, King of England (1133–1189) supposedly started when his wife,
Queen Eleanor () was pregnant with their last child,
John (1166–1216) in 1166, but the king publicly acknowledged the
affair for the first time in 1174. The queen is thought to have given birth to John in
Beaumount Palace instead of
Woodstock Palace because Clifford lived at Woodstock. Alison Weir, in her biography of Eleanor, thinks this unlikely and dismisses it as "another example of the unsupported fictions that have attached themselves to Rosamund's name". The ruins of the abbey still stand and are open to the public.
Paul Hentzner, a German traveller who visited England around 1599, recorded that her faded tombstone inscription read in part: Followed by a
rhyming epitaph: {{Verse translation|lang=la :Non redolet sed olet, quae redolere solet. She who used to smell sweet, still smells—but not sweet. Accounts from the time of its destruction report that, along with other engravings, the tomb contained the depiction of a
chalice. ==In folklore==