In researching my great great grandmother, Elizabeth Cowan Short, I have located her death record in Franklin County, Ohio, USA (1896), as well as her burial record. They record her birth as 29 September 1824, in London, England, to parents Robert and Elizabeth Cowan. This was probably informed by her husband, John Short, who lived another 30 years.
Sources: Green Lawn Cemetery inscriptions, Columbus, Franklin Co., Ohio: http://www.delaware43015.com/greenlawn/greenlawn/Greenlawn/index.htm
The 1850 US Census has Elizabeth (age 24) living with her new husband and infant son in Delaware County, Ohio: https://www.familysearch.org/ark:/61903/3:1:S3HT-6QW9-BR5?i=2&cc=1401638
Also living in the household is Harriett Cowan, 72, born in England. Harriett's headstone (1855), located on the campus of Kenyon College, Gambier, Knox County, Ohio reads "Our Mother...Harriett Cowan..." There is no death record for this burial. From findagrave.com
I have researched the other members of the household and there does not seem to be a family connection. I cannot find any evidence of siblings for Elizabeth. I cannot find any other records that name Elizabeth's parents, other than quick mention of her father in a 1901 biography of her husband. It is possible that Elizabeth's mother was actually Harriett, but she would have been around 46 at the time of her birth. Could the phrase "Our Mother" on Harriett's headstone simply be a term of endearment?