Hi,
It sounds like your CD is a transcript from a transcript of the PRs, available for reference only in book form at Kendal Local Studies Library.
Book III transcribed by R.N.Birley in 1952, in conjunction with CWAAS, includes baps. for 1596-9, marrs. & burs. 1591-9 and baps. 1607-31. Book IV, also transcribed by R.N.Birley in 1960 on behalf of CWAAS, covers marrs. 1606-31 and burs. from 1606-31. Both books are fully indexed.
Regards
DD