1871, Ramsey, district 1, schedule 29, 8 West Quay
Horatio Brown, head, married, 36, inn keeper, England
Ellen, wife, married, 32, England
Howard, son, 9, scholar, Ramsey
Charles, son, 6, scholar, Ramsey
Ann S, daughter, 7, scholar, Ramsey
Lilly, daughter, 5, scholar, Ramsey

This probably explains why she is not found in earlier censuses.