Empress PERSON@1 , also known as Matilda of LOCATION@1 or PERSON@2 -LRB- c. NUMBER@1 February NUMBER@2 NUMBER@3 September NUMBER@4 -RRB- was the daughter and heir of King PERSON@3 I of LOCATION@1 .

Empress PERSON@1 -LRB- c. February NUMBER@5 - NUMBER@3 September NUMBER@4 -RRB- , sometimes called Empress PERSON@4 , was the second child of PERSON@3 I of LOCATION@1 and Matilda of LOCATION@2 .
