Hello
The IGI shows the following births - all extracted:
James Dewar B: 17 NOV 1838 Inverkeithing, Fife, Scotland Ch: 24 NOV 1838 Inverkeithing, Fife, Scotland
Ann Dewar - Ch: 24 JAN 1841 Associate Congregation, Inverkeithing, Fife, Scotland
William Dewar - B: 17 JAN 1845 Inverkeithing, Fife, Scotland ch. 27 JAN 1845 Inverkeithing, Fife, Scotland
Regards, Steve :O)