The first commercial deodorant, Mum, was introduced and patented in the late nineteenth century by an inventor in Philadelphia, Pennsylvania, Edna Murray. [ … six sentences later … ]
In 1888, the first commercial deodorant, Mum, was developed and patented by a U.S. inventor in Philadelphia, Pennsylvania, whose name has been lost to history. 
If it’s possible to make things any more perfect, both the sentence claiming the first commercial deodorant was developed by Edna Murray and the sentence claiming the inventor’s name was lost to history cite the same reference.
Another Blog, Meanwhile Index
The index rose appreciably thanks to a precocious child who didn’t see any reason not to keep pressing the ‘up’ button on the elevator. Well done, child, keep trusting in your elevator-button-pressing instincts! Until the building closes and everyone has to leave.