Hi, I cannot help with williams parents but I do have some childrens baptisms recorded in the Elland St Mary's parish registers. I will list them for you just in case they may help. 13 Mar 1768 Martha daughter of William at Stainland, 13 july 1770 Sarah daughter of William at Stainland, 18 Oct 1772 rebecca at Barkisland daughter of william, 8 March 1776, william son of william at barkisland, 1 July 1778, Jane at Barkisland daughter of William, That is all that is listed for William. There is no record of the marriage at this church but there may be others or non conformists in the area. I have found Rebecca's burial at St Marys on 23 Oct 1806 relic of William. I have a record of Williams marriage to Rebecca WORMALD both OTP (of this parish) on 18 November 1767, witnesses Joshua FOUNISS and Ely hoyle. William is shown as a paper maker and Rebecca made her mark in register.
I have Rebecca's baptism on 11 August 1746 shown as at Stainland father Joseph( her name is spelt REBECKAH) . but there is another baptism for Rebecca also with the other spelling on 8 May 1748, father John. Unfortunately I cannot find a record for William at this church. hope some of this info is useful. Regards Trevor