Robert IV de Marmion
Robert IV was born in 1186 in Tamworth, Staffordshire, England.

 Juliane De Vassy
Juliane was born in 1192 in Tamworth, Staffordshire, England.  Juliane is no longer alive.

 Robert V de Marmion
Robert V was born about 1200.

 Philip De Marmion
Philip was born about 1218 in Tamworth, Staffordshire, England.