Robert Fitz Suein of Essex and Gunnor Bigod [parents of Henry, Lord of Rayleigh]. [Ancestral Roots]
Robert of Essex, Lord of Rayleigh [1st husband of Alice de Vere]. [Magna Charta Sureties]
Note: I assume that the above two are the same person. I also assume that Alice de Vere could have been born well before 1141. But Rosie Bevan states that Gunnor Bigod married again (presumably after Robert's death-or maybe they divorced?). Possibly the marriage indicated by MCS of Alice de Vere and Robert of Essex is a mistake.