I believe Joshua Heath Mayer had a sister Mary Mayer who married George Wooliscroft.
Joshua married a Sarah ? They had a son born 1821 Elijah Mayer who married his first cousin Mary Ann Woolliscroft 1st Jan 1845.
I found two children born Bagnall cum Bucknall parish records web page. 1776 Anne of Samual & Mary Mayer, 1777 Sarah of Samual & Mary Mayer.
Thanks Mark