Sirrah on Family Tree Circles

Looking for any info on Per or Peter Hoglund (same Person) & wife
Marta or Martha. Imigrated from Sweden to New York in May 1884.
Per-b.6/3/1834..........Marta-b.11/25/1847.

I am looking for info on G-Grandfather John B Harris. 1880 census lists them living in Dawson Ne. But gives my Grandfather as 6 mo. old,and born in Il. It gives Johns birthplace as In. Any info will help I am new at this.