I agree with warncoort - we do need more information for us to help you.
I would ask five specific questions:
(1) What is (are) the name(s) of the McMINN you have in Lancashire?
(2) What information do you have on the dates and locations (parishes, towns etc.)
(3) What is (are) the source(s) of your information?
(4) What exactly are you wanting to find out?
and
(5) Are you looking for living people? (if so, we cannot help by posting details of living people - but we might be able to point you in the direction of other resources)
Philip