Summary from Wikipedia

Georg Simon Ohm was born into a Protestant family in Erlangen, Brandenburg-Bayreuth (then part of the Holy Roman Empire), son to locksmith Johann Wolfgang Ohm, and Maria Elizabeth Beck, daughter of a tailor in Erlangen. Although his parents had not been formally educated, Ohm's father was a respected man who had educated himself to a high level and was able to give his sons an excellent education through his own teachings.[4] Of the seven children of the family only three survived to adulthood: Georg Simon, his younger brother Martin, who later became a well-known mathematician, and hi ...