Portsmouth Genealogy (in Bay County, MI)
USA (1,379,301) > Michigan (33,705) > Bay County (599) > Portsmouth (32)
NOTE: Additional records that apply to Portsmouth are also found through the Bay County and Michigan pages.
Portsmouth Birth Records
1867-1911 Michigan Births and Christenings Index Ancestry 
Births and deaths, Bay County, Michigan, 1857-1870 : recorded in volume A and B FamilySearch Library
Michigan, Birth Records, 1867-present Michigan Department of Health and Human Services
Michigan, County Births, 1867-1917 Family Search
Portsmouth Cemetery Records
Floral Garden Cemetery Billion Graves
Michigan Deaths and Burials Index, 1867-1995 Ancestry
Portsmouth Census Records
Federal Census of 1940, Portsmouth, Michigan LDS Genealogy
U.S. Federal Census 1790-1950 Ancestry
U.S. Federal Census 1790-1950 MyHeritage
United States Federal Census, 1790-1950 Family Search
Portsmouth Church Records
1867-1911 Michigan Births and Christenings Index Ancestry
Portsmouth City Directories
Brown's General Directory of Bay City, Portsmouth, Wenona, Essexville, Banks and Salzburg, 1871 Ancestry
Directory of Bay City, Portsmouth, Wenona and Bangor 1868-69 HathiTrust Digital Library
Umberhine & Gustin's Lake Shore Gazetteer and Business Directory (1861) Internet Archive
Portsmouth Death Records
1867-1952 Michigan Death Records Ancestry
1897-1920 Michigan Death Records Ancestry
Births and deaths, Bay County, Michigan, 1857-1870 : recorded in volume A and B FamilySearch Library
Death records, 1867-1946; index to deaths, 1883-1920 FamilySearch Library
Michigan Deaths and Burials Index, 1867-1995 Ancestry
Michigan Deaths, 1971-1996 Ancestry
Michigan, Death Records, 1867-present Michigan Department of Health and Human Services
Portsmouth Immigration Records
Index to the Bay County Naturalization Files Michigan History Center
Michigan, Federal Naturalization Records, 1887-1931 Ancestry
Naturalization records, 1858-1953 ; index, ca.1858-1903 FamilySearch Library
Petition and record, 1906-1947 ; repatriations, 1940-1958 FamilySearch Library
Petitions grants and denials, 1929-1944 ; naturalization stubs, 1916-1926 FamilySearch Library
Portsmouth Land Records
Deed records, 1835-1934; index, 1853-1907 FamilySearch Library
Portsmouth Map Records
Bird's eye view map of Bay City, Portsmouth, Wenona & Salzburg, Bay Co., Michigan 1867. Library of Congress
Portsmouth Marriage Records
1867-1952 Michigan Marriage Records Ancestry
Michigan County Marriages, 1822-1940 Ancestry
Michigan, Marriage Records, 1867-present Michigan Department of Health and Human Services
Portsmouth Probate Records
1784-1980 Michigan Wills and Probate Records Ancestry
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