Gretchen’s current address is 7027 Sunset Dr, Allendale, Mi 49401. The current age of Gretchen is 63. The phone number (616) 895-6531 is Gretchen’s. Her birth year was listed as 1961. In addition to Allendale, Gretchen also lived in Allendale. We have found 4 possible relatives of Gretchen: Randall Lee Knoper, Robert D Knoper, Derek G Knoper and one other person.