I've yet to find out when/where John Slatter Sr's first wife died--she was Mary Shehen Slatter, b. 1840 in Marylebone, Middlesex, England. John was born in 1838 in Oxfordshire, England. John & Mary's children moved to Canada and the US, and by the late 1880s, John had moved to Cleveland, where his daughter, Mary, later married James Edgar Wood. I speculate that John (a wallpaper cleaner and hanger) met James Edgar Wood (a builder) in Cleveland and that's how Mary met her husband (and became hubby's grandparents).
But now back to Louisa, who's an unknown. Her obit appeared in the Cleveland papers on February 26, 1895. It reads:
Slatter. Louisa A. M. Slatter, wife of J. Slatter, at 2 a.m., February 24, age 46. Funeral from residence, No. 433 1/2 St. Clair St, at 2 p.m., City time, Tuesday, February 26. Chosen friends invited. Cincinnati papers please copy.So what do I know about Louisa? According to the cemetery record, Louisa was white, a native of England, and died of Brights disease. When John Slatter Sr. died, he was buried next to her.
I've tried calling, writing, and e-mailing the Cuyahoga County clerk's office asking about whether a death cert exists for Louisa Slatter. In the past, I've had good luck with them, but this time, after 6 months of intermittent requests, no response (perhaps because no record exists in their files). Nor have I ever located a marriage record for Louisa and John. I'm going to try to find some connection with Cincinnati, given the obit's mention of it.
2022 Update: Louisa has been found! I redid my research from scratch on a different genealogy site and discovered where she and John Slatter tied the knot.