Yes, Geoff, you are right on the spelling.I checked Abraham Kummerer's 1851 estate record again. Magdalena is the wife of Peter Fister.My records indicate that she was born (or baptized) on March 17, 1792. She died on May 19, 1874. Her grandparents, I believe, were Jacob Friederick Kummerer and his wife Maria (Marui, Mary) Kummerer nee Miller. Maria was born in 1735 and died 22 Jan 1821. They were probably the sponsors at the baptism you mentioned.