There are three Forshaw entries in 1901.

Mary A Forshaw, widow, 66, boarding at 22 Bowring Road, Ramsey.

Douglas, district 20, schedule 104, 17 Derby Rd.
Dinah Nicholson, head, single, 52, living on own means, England
Mary Forshaw, sister, widow, 49, own means, Douglas
Douglas Forshaw, nephew, 17, apprentice engineer, Douglas

Maughold, district 3, schedule 45, Ard
William H Forshaw, head, married, 35, retired draper, Ramsey
Mary E A, wife, married, 33, England
Stanley, son, 8, Ramsey
Herbert C, son, 3, Ramsey
Lilian C, daughter, 1, Douglas