Chris, what a fast reply, thank you so much. The Porters always were a long shot, I'm pretty sure they were in the pauper's graves moved from Wellwynd.
I have a Mary Park who would be my gr.gr.aunt, born in 1872 so that is possible but the others aren't names I recognise. Definitely the 1800s I'm looking for, I should have said. Mary was born in New Monkland district in 1872.
I'll need to do some digging and find out if she died in her teens.
Many thanks for taking the trouble.