 Gerard was the nephew of Walkelin , Bishop of Winchester , and Simon , Abbot of Ely . His parents were Osbert and Anna , and his brother Peter was also a royal clerk . Where he was born and raised is unknown ; he is documented as cantor of Rouen Cathedral , and precentor of the same cathedral , although the date of his appointment to either office is unrecorded . By 1091 he had become archdeacon of Rouen . He served in the royal chancery under successive kings of England , William I and William II . 
 Gerard was the nephew of Walkelin , Bishop of Winchester , and Simon , Abbot of Ely . His parents <a href='uninflect' title='1'><mark>were</mark></a> Osbert and Anna , and his brother Peter was also a royal clerk . Where he was born and raised is unknown ; he is documented as cantor of Rouen Cathedral , and precentor of the same cathedral , although the date of his appointment to either office <a href='drop_aux' title='2'><mark>is</mark></a>unrecorded . By 1091 he <a href='been_done' title='3'><mark>had</mark></a> become archdeacon of Rouen . He served in the royal chancery under successive kings of England , William I and William II . 
Gerard was the nephew of Walkelin , Bishop of Winchester , and Simon , Abbot of Ely . His parents was Osbert and Anna , and his homeboy Peter was also a royal clerk . Where he was born and raised is unknown ; he is documented as cantor of Rouen Cathedral , and precentor of the same cathedral , although the date of his appointment to either office unrecorded . By 1091 he done become archdeacon of Rouen . He served in da royal chancery under successive kings of England , William I and William II .