William de Calthorpe , Sir Knight
William de was born about 1241 in Calthorpe, Norfolk, England.  He died after 1306.

 Celia de Burnham
Celia de was born about 1245 in Burnham Thorpe, Norfolk, England.

 Isabel Calthorpe
Isabel was born about 1267 in Burnham Thorpe, Norfolk, England.

 Walter Calthorpe , of Burnham Thorpe, Sir
Walter was born about 1269 in Burnham Thorpe, Norfolk, England.  He died in 1324.