Matilda was the daughter of King Henry I of England and married Holy Roman Emperor, Henry V. She is considered the first female ruler of England.
Matilda. (2013). The Biography Channel website. Retrieved 01:45, May 21, 2013, from http://www.biography.com/people/matilda-9402517.
Matilda. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/matilda-9402517 [Accessed 21 May 2013].
"Matilda." 2013. The Biography Channel website. May 21 2013, 01:45 http://www.biography.com/people/matilda-9402517.
"Matilda," The Biography Channel website, 2013, http://www.biography.com/people/matilda-9402517 [accessed May 21, 2013].
"Matilda," The Biography Channel website, http://www.biography.com/people/matilda-9402517 (accessed May 21, 2013).
Matilda [Internet]. The Biography Channel website; 2013 [cited 2013 May 21] Available from: http://www.biography.com/people/matilda-9402517.
Matilda, http://www.biography.com/people/matilda-9402517 (last visited May 21, 2013).
Matilda. The Biography Channel website. 2013. Available at: http://www.biography.com/people/matilda-9402517. Accessed May 21, 2013.