I couldn't find a John Hindmarch/sh in Tynemouth Christ Church baptisms. Christ Church is the parish church for North Shields. There is a John Hymers baptised 8 Sept 1819 s/o John and Margaret, pitman. (page 561 of 669 in the Bishop's Transcripts). There is another John Hymers baptism s/o Wm and Mary in 1817 but he died in 1821. Janis