Initially , he resents his father for his mother 's death , but their relationship improves gradually after the family moves to Avonlea .
Arthur Pettibone ( Zachary Ansley ) : Clive 's oldest child , he is much older than his siblings .
Initially , Clive resents Clive 's father for his mother 's death , but their relationship improves gradually after the family moves to Avonlea .
Arthur Pettibone ( Zachary Ansley ) : Clive 's oldest child , he is much older than his siblings .