Mona
Seems that there are several Frederick Brews

IGI has
Frederick ch 25 Mar 1860 Onchan s/o James Brew & Elizabeth Hampton md 21 MAY 1848 Onchan

In the 1871 census index there are several other Frederick Brews
I don't have time to look them up right now as I'm expecting company, but can do more on them later today.

1871 census
Frederick 4 b Ramsey living in Ramsey dist 2 entry 175
Frederick 2 b Douglas living in Douglas dist 9 entry 152
Frederick 4 months b Ramsey living in Ramsey dis 2 entry 4

Donna