Amelina Petit de Billier was born in Paris in 1798. In 1820, she moved from France to England to join the Feilding family as their governess at Lacock Abbey.
The Feilding family consisted of Charles Feilding, his wife Lady Elisabeth (previously Talbot, nee Fox-Strangways), their two daughters Caroline and Horatia, and Lady Elisabeth's son William Henry Fox Talbot. Amelina was a similar age to William and not much older than the two girls, so she seemed to live as part of the family even though she was originally engaged to be their governess. She enjoyed her life with the Feildings very much, remaining close to the family and actually was buried in the same plot as William Henry Fox Talbot.