John I Plantagenet
John I was born on December 24th, 1167 in Beaumont Palace, Oxforshire, England.  He died at the age of 48 on October 19th, 1216 in Newark Castle, Nottinghamshire, England.

 Agatha De Ferrers
Agatha was born in 1168 in Charltey, Staffordshire, England.  She died in Aberconway, Carnarvonshire, Wales.

 Joan Plantagenet
Joan was born on July 22nd, 1190 in Newark Castle, Nottinghamshire, England.  She died at the age of 46 in February 1237 in Aberconway, Carnarvonshire, Wales.  She was buried on February 2nd, 1237 in Llan-faes, Llanvaens, Anglesey, Wales.

 UNKNOWN Plantagenet