Pierre I De Courtenay
Pierre I was born about 1140.

 UNKNOWN Elizabeth
UNKNOWN was born about 1141.

 Pierre II De Courtenay
Pierre II was born about 1155 in Courtenay, Loiret, France.  He died after June 1219 in Epirus, Turkey.

 Alice De Courtenay
Alice was born about 1163 in Courtenay, Calinois, France.  She died about September 14th, 1211 in France.