According to the 2011 film, Hysteria, a former foster child invented the vibrator.

Dr Mortimer Granville (Hugh Dancy) was taken in by the St. John-Smythe family after his parents died. He becomes a physician, works with Dr Dalrymple who specialises in treating 'hysterical' women by masturbating them, gets RSI (as we'd call it today), and with his foster brother (Rupert Everett) develops the vibrator.

In fact, it is Mortimer Granville (1833-1900) who is credited with inventing the vibrator, but we're not certain about the foster care story.