Hi Sandra,
Latest update of probable route back from John Cockroft b 1773
John Cockroft 1773 father John 
John above m Sarah Midgley 1806
John Cockroft 1747/8  father Jonathan 
John Cockroft above m Frances sutcliffe. (sexton) 1769 
 
Jonathan b 1726 father Joseph
Jonathan Cockroft above m Phebe Webster 1742
 
Joseph Cockroft  b 1708 father Joshua
Joseph Cockroft above married Martha Priestley 1724
 
Joshua birth unknown? aprox 1685 ish unlce of Joshua b 1731 below in grave 250 from Grave 250 and 251 and Joshua family name suspect Father John Cockroft b 1659 died 1717 
Joshua Cockroft above married Matha Firth 1706 Elland/Bighouse> Woodhouse
problable sister
Margerat Cockroft  b 1787 Father John in Elland parish adode Woodhouse Brighouse
probale brother
John Cockroft  b 1659 d 1717 had a son John Cockroft a bother of Margerat above! (Birth Year Unknown)  who married Sarah who died 1765 aged 69 b 1796
Spotland & Ovenden, co.York - settlement John Cockcroft, Sarah his wife and Mary,Joshua (b 1731   died 1801 age 70 Grandson of John b1659-d 1717) , Sarah, John and James their children ( from Lancashire Archives)
John and Ann moved to Warley post 1787 no more sibling born in Elland post 1787
 
John Cockroft b 1759 -d 1717 age 58 father Christopher Cockroft
John Cockroft above m Ann Taylor 1785 by Licence Allegation Elland/Bighouse Woodhouse Ann died 1708 Warley in child birth
 
John Cocktroft above 2nd marriage to Mary year unknown-Mary died 1743 aged 68
Christopher Cockroft b 1639 Heptonstall father Henry
No Marriage known as yet for Christopher
There are too many Henry's bapt 1600 +/- 20 year to say which one was Christopher's father
.........................................................................................................................
Other Possible route back is the Joshua b 1670 in Ance*try.co but seems a bit too old to father Joseph b 1708 but can't be ruled out.
............................................................................................................................
I'll see if there are any other possible Joshua Cock(C)roft b 1685ish possible routes back or Baptisms.