This image was shared by mikesarna1 in 2011 on Ancestry.com. It is believed to show most of the children of Johan and Lena Oetterer about the end of summer 1887. The date is based on guessing that the youngest child pictured, Katherine, is about age 2-3 in the image; the plants suggest summer to late summer, which makes 1887 a bit more likely in my opinion than 1886.
But their brother Herman would marry Catherine Long, and their daughter Julia would marry Harvey Thrun, and their son Clarence is the father of Elizabeth Thrun Carlson Saewyc.
Which is how we are related to the people in this photo from about 130 years ago.