I have looked at this census several times for two different families, one on each side of my family tree. Joseph Royer in household 14 with his wife Vera and children George, Alfred, and Marian. Alfred Royer is my maternal grandfather. He is 1 year and 11 months old (born in April of 1928) in April of 1930 living in Sault Ste. Marie, Chippewa, Michigan.
Truman King in household 15 with his wife Loretta and children Willard C. and Katherine and two brothers-in-law (Loretta's brothers) Frank and William Ward. Truman and Loretta King are my paternal great great grandparents.
My paternal great grandmother Mae Arla King (daughter of Truman and Loretta) had already moved out of the home after her marriage to Orlie Charles McKenzie in 1919. My grandfather Alexander Orlando McKenzie was born in January of 1924. Alfred Royer and Alexander McKenzie( Maternal Grandfather and my Paternal Grandfather) being only 4 years apart very well could have played together as young children.
Conclusion: in 1930, Sault Ste. Marie, Chippewa, Michigan, my Paternal Great-great grandparents, and my maternal Great Grandparents were living right next store to each other.
Lesson learned: Names, Dates, and Place are great, but the moment when a story comes out of the evidence is what makes this all worth it!