I have some information taken from Prescot Parish Church records. It is a little confusing but seems to indicate that there were two "Thomas & Martha Strettle" families in the area around that time, one in Whiston and one in Tarbock. The baptisms recorded for the Whiston family are Abraham b.1792, Ellen b.1795, William b.1797, Martha b.1799, Mary b.1802, Elizabeth b.1805, Margaret b.1807, Ann b.1810, Thomas b.1814. Those recorded for the Tarbock family are James b.1810, Joseph b.1815. There is are Thomas Strettles recorded b.1782 to Samuel & Ann (could be the Tarbock Thomas) and b. 1765 to Mary (possibly Whiston). I hope this is of some help.