nels jensen, b. Nov. 1851 (7) Denmark

Searching for info on my husband's g-grandfather, Nels C. Jensen who was born in Denmark in Nov. 1851 or 1857 (hard to read in census record). He is listed in 1900 Marquette, MI census, husband of Annie and father of John (b. July 1874), Ottawa (b. Jan 1878), Hans (May 1884), Howard (Apr 1891), Annie(Jan 1883), Tillie (Jan 1886), Sadie (Apr 1887). Annie (b 1883 married John Harwood in MI) was my husband's grandmother. Annie's marriage record lists mother as Tillie Johnson. Seems maybe Nels was married twice. Anyone who knows this family please contact me.