I too have relatives by this name. I am from Wisconsin. I have a picture of a Emma Eckburg. Supposedly she is a sister of Olaf Danielson. I need a connection of families from Sweden to America. Olaf immigrated in 1882, and he married Emma C Peterson. Karl Eckburg was a cousin to my grandfather Carroll Danielson, born in Minnesota to Olaf and Emma in 1899. There has been a story in the family that Olaf or perhaps his father left Sweden and didn't want the wife to find out where he went, so he my have changed his name from when he left Sweden, and what he registered his name as once in America.
Please help! I can't thank you enough.