Sorry to be so late. It turns out there are loads of Atkinsons in and around Blyth so it has been impossible to isolate those that you need.
Do you have dates of birth - that would help.
I can confirm what Callum said in that Harrison Atkinson was buried at Blyth civil cemetery on 8th May 1929 aged 47. Address given as 8 Single Row.
Helen was buried on 23rd June 1958 aged 80. Address given as 57 Union Street Blyth.
One sad but interesting thing I spotted in Cowpen records was an entry in 1895 for Harrison Atkinson aged 1 day. Address given as Cowpen Village which is Horton parish so it might be worth looking there too.
Christine
Thanks, Christine. It's immensely kind of you to be looking into them for me and I appreciate it.
With Harrison and Ellen/Helen sorted, I'm hunting down Harrison's dad and granddad! The Union Street address makes sense as I remember one of my great-aunts (her daughter) living there.
John Atkinson who was born 1856 in Seaham Harbour and died in 1938 on Astley Rd Seaton Deleval. He was married twice (his first wife died soon after their marriage while the family was still in Sunderland), so the wife who will likely be buried in the right area is Elizabeth (Born Sunderland 1830, died Seaton Sluice May 1899)
His father was another Harrison Atkinson and he died in May 1913 in the Blyth area. He was born on 23 October 1831 in Bishopwearmouth in Sunderland, likely in Ayres Quay. The last address I have for him is 16 Melton Terrace New Hartley in 1911.
I haven't seen the baby Harrison Atkinson anywhere yet, but he's likely to be related to someone in the tree. Am actively keeping an eye out for him.
Thank you to everyone else for the pictures and info