According to Akron, OH birth records Milton P. Lantz and Sara Winhanhemo had a child, Grace, in May of 1871. In Sept.of 1872 he and Sara Fraze had a boy named Bertie. There are no other birth records for this couple assuming that the two Saras are the same person. In the 1900 census my grandfather James Edward Lantz gave his dob as Sept. 1872 the same month and year as for Bertie. Family records say that James was born in Akron, OH, the son of Peter Lantz and Sara Frease or Freise. Peter could have been the name which Milton P. preferred and it's no stretch from Frease to Fraze. The Winhanhemo is interesting and will require some searching.
Of course any info re any of this will be appreciated.