Thank you both. I should have been more specific about what I already know. This Linn family was living in Lima, Allen Co., OH in 1850. The published history of Allen Co. says that Edmund S. Linn (son of James S. Linn) died of cholera and was buried in June 1851. It did not say where, but I'd think it would have to be somewhere in Allen Co.
Only one of six Linns in the household in 1850 has been found anywhere since, being 2 in 1850 and 11 in 1860, and living in 1860 with an aunt and uncle. That leads me to believe the boy was the only family member to survive the cholera, which struck in Lima again in 1854.
That outbreak was so severe that nearby Delphos "was almost depopulated", and I've read elsewhere that in some communities cholera victims were dying so fast there was not time even to make coffins and many people were buried in mass graves.
That of course is what happened in Sandusky Co., but that's 100 miles from Lima.