Marie Eickhoff in Herford a town southwest of Hannover got her Honorcross for widows in 26 April 1935. Signed by the Oberburgmeister and a very low number 168/35. She could have been the wife of Musketier Alex Eickhoff who was killed in France 30 April 1917 he is buried in Dourges.
The only other killed Eickhoff I found was Adalbert Eickhoff Leutnant d Res who died in Oct 1914 in France.