Lizzie "Dora" (Ricksher) Petersen

"[Actor William Petersen]'s paternal grandmother was Lizzie Theodora/Dora/Dorothy Ricksher (the daughter of John Ricksher and Laura Josephine Michamp). John was German. Laura was born in Louisiana, and had French and German ancestry."

Sources

• "William Petersen." Ethnicelebs, published 17 June 2014. < http://ethnicelebs.com/william-petersen > Accessed 26 January 2017.
• "William Petersen." Wikipedia. < https://en.wikipedia.org/wiki/William_Petersen > Accessed 26 January 2017.