Reginald FitzPiers
Reginald was born in 1235 in Blaen Llyfni, Wales.  He died at the age of 51 on May 4th, 1286.

 Joan De Vivonia
Joan was born about 1251 in Chewton, Somerset, England.  She died on June 1st, 1314.

 Eleanor FitzPiers
Eleanor was born about 1267 in Blaen Llyfni, Wales.

 Reginald FitzPiers
Reginald was born about 1268.

 John FitzPiers
John was born about 1270.

 Peter Herbert FitzPiers
Peter Herbert was born about 1275.