Reginald de Halesworth de Argenteyn
Reginald de Halesworth was born in 1144 in Wymondley, Hertford, England.

 Rose de Halesworth
Rose was born in 1160.  Rose is no longer alive.

 Richard de Argenteyn
Richard was born in 1182 in Wymondley, Hertford, England.  He died at the age of 64 in 1246 in Holy Land.