I found the image of the marriage record book that shows the ages, it appears they both exaggerated their ages. According to the record text both lived in Freeland, Saginaw County, they were married by Edwin Foster, Minister of the Gospel.Witnesses Wm and Margaret H. Smith of Freeland Name: Franklin H Cummins Sex: Male Age: 21y Birth Date: 1855 Spouse's Name: Lucinda Blackman Spouse's Sex: Female Spouse's Age: 18y Spouse's Birth Date: 1858 Marriage Date: 17 Jun 1876 Marriage Place: Saginaw, Michigan Event Type: Marriage Event Date: 17 Jun 1876 Event Place: Saginaw, Michigan <table="1800|1800|1800|1800|1800"> <row> <b>Household </b> | <b>Role </b> | <b>Sex </b> | <b>Age </b> | <b>Birthplace </b> </row> <row> Lucinda Blackman | Wife | F | 18y | Michigan </row> </table> Reference: v 3 p 138 rn 3590 Digital Folder Number: 4207585 Microfilm Number: 2342460 Image Number: 144 Indexing Batch: M01792-6 "Michigan Marriages, 1868-1925," database with images, <i>FamilySearch </i>(https://familysearch.org/ark:/61903/1:1:NQSD-QJB : 18 February 2021), Franklin H Cummins and Lucinda Blackman, 17 Jun 1876; citing Marriage, Saginaw, Michigan, , Citin g Secretary of State, Department of Vital Records, Lansing; FHL microfilm 4207585. GS Film number: 2342460 Frame Number: Digital Folder Number: 4207585 Image Number: 144 Reference ID: v 3 p 138 rn 3590 Citing this Record: "Michigan Marriages, 1868-1925," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:NQSD-QJB : 4 December 2014), Franklin H Cummins and Lucinda Blackman, 17 Jun 1876; citing Saginaw, Michigan, v 3 p 138 rn 3590, Departme nt of Vital Records, Lansing; FHL microfilm 2,342,460. -

Name: Franklin Cummings Event Type: Census Event Date: 1880 Event Place: Genesee, Genesee, Michigan, United States District: ED 79 Gender: Male Age: 24 Marital Status: Married Race: White Race: W Occupation: Laborer On Farm Relationship to Head of Household: Self Relationship to Head of Household: Self Birth Year (Estimated): 1856 Birthplace: Michigan, United States Father's Birthplace: Michigan, United States Mother's Birthplace: Michigan, United States Note: Sheet Letter: A Sheet Number: 304 Sheet Number and Letter: 304A Household ID: 7408980 Person Number: 0 Volume: 1 Affiliate Name: The U.S. National Archives and Records Administration (NARA) Affiliate Publication Number: T9 Affiliate Film Number: 0579 GS Film Number: 1254579 Digital Folder Number: 005161010 Image Number: 00615 Household Role Sex Age Birthplace Franklin Cummings Self M 24 Michigan, United States Lucinda Cummings Wife F 22 Michigan, United States Lorence Cummings Son M 1 Michigan, United States John Blackmore Father-in-law M 76 Michigan, United States Horace Blackmer Brother-in-law M 24 Michigan, United States Tracy Blackmer Sister-in-law F 15 Michigan, United States "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWS7-R64 : 14 August 2017), Franklin Cummings, 1880; citing enumeration district ED 79, sheet 304A, NARA microfilm publication T9 (Washingt on D.C.: National Archives and Records Administration, n.d), roll 0579; FHL microfilm 1,254,579.

Name: Frank Cummings Sex: Male Age: 43 Marital Status: Married Race: White Relationship to Head of Household: Head Years Married: 24 Birth Date: Aug 1857 Birthplace: Michigan Marriage Year (Estimated): 1876 Father's Birthplace: New York Mother's Birthplace: Canada Eng Event Place: Mt Morris township Mt Morris village, Genesee, Michigan, United States Event Place (Original): ED 24 Mt Morris township Mt Morris village, Genesee, Michigan, United States <table="1800|1800|1800|1800|1800|1800"> <row> <b>Household </b> | <b>Role </b> | <b>Sex </b> | <b>Age </b> | <b>Birthdate </b> | <b>Birthplace </b> </row> <row> Lucindia Cummings | Wife | F | 39 | Sept 1861 | Michigan </row> <row> Lawrence Cummings | Son | M | 21 | Dec 1879 | Michigan </row> <row> Unice Cummings | Daughter | F | 20 | Aug 1880 | Michigan </row> <row> Edith Cummings | Daughter | F | 18 | June 1882 | Michigan </row> <row> Bessie Cummings | Daughter | F | 10 | Jan 1890 | Michigan </row> <row> Ray Cummings | Son | M | 7 | Apr 1893 | Michigan </row> <row> Roy Cummings | Son | M | 6 | July 1894 | Michigan </row> </table> District: 24 Line Number: 84 Household ID: 124 Sheet Number and Letter: 6B Affiliate Publication Number: T623 Affiliate Name: The U.S. National Archives and Records Administration (NARA) Indexing Batch: N00834-6 Household ID: 124 GS Film Number: 1240711 Digital Folder Number: 004120223 Image Number: 00327 "United States Census, 1900," database with images, <i>FamilySearch </i>(https://familysearch.org/ark:/61903/1:1:MSMW-WBV : accessed 16 April 2023), Frank Cummings, Mt Morris township Mt Morris village, Genesee, Michigan, United States; citing e numeration district (ED) 24, sheet 6B, family 124, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,711. "United States Census, 1900," database with images, <i>FamilySearch</i> (https://familysearch.org/ark:/61903/1:1:MSMW-WBR : accessed 15 December 2019), Roy Cummings in household of Frank Cummings, Mt Morris township Mt Morris village, Genesee, M ichigan, United States; citing enumeration district (ED) 24, sheet 6B, family 124, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,711.

Pearl's brother Elmer was a border in the Cummings home in 1910, 5 years before Lawrence and Pearl got married, Elmer was 8 years younger than Lawrence. Thomas Roe another boarder could be related Pearl and Elmer's mother is Florence Roe. All the men in the house were working in the Auto shops. Jackson was the largest manufacturer of automobiles in the Midwest. There were 24 companies that built cars in Jackson. At one time, this industry was the largest employer in Jackson. Name: Frank H Cummings Sex: Male Age: 52 Birth Year (Estimated): 1858 Marital Status: Married Race: White Relationship to Head of Household: Head Birthplace: Michigan Father's Birthplace: New York Mother's Birthplace: New York Event Place: Jackson Ward 6, Jackson, Michigan, United States Event Place (Original): Jackson Ward 6, , Michigan Sheet Letter: A Sheet Number: 3 <table="1800|1800|1800|1800|1800"> <row> <b>Household </b> | <b>Role </b> | <b>Sex </b> | <b>Age </b> | <b>Birthplace </b> </row> <row> Lucinda Cummings | Wife | F | 49 | Michigan </row> <row> Lawrence A Cummings | Son | M | 30 | Michigan </row> <row> Ray M Cummings | Son | M | 18 | Michigan </row> <row> Roy G Cummings | Son | M | 16 | Michigan </row> <row> Samuel Bailey | | M | 26 | Michigan </row> <row> Elmer Greiner | | M | 22 | Ohio </row> <row> Thomas Roe | | M | 39 | Ohio </row> </table> District: ED 20 Household Identifier: 43 Sheet Number and Letter: 3A Affiliate Film Number: 653 Affiliate Publication Number: T624 Affiliate Name: The U.S. National Archives and Records Administration (NARA) Digital Folder Number: 004972484 Microfilm Number: 1374666 Image Number: 00561 Indexing Batch: N03435-1 GS Film Number: 1374666 Digital Folder Number: 004972484 Image Number: 00561 "United States Census, 1910," database with images, <i>FamilySearch </i>(https://familysearch.org/ark:/61903/1:1:ML5V-CKZ : accessed 16 April 2023), Frank H Cummings, Jackson Ward 6, Jackson, Michigan, United States; citing enumeration distric t (ED) ED 20, sheet 3A, family 43, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 653; FHL microfilm 1,374,666. "United States Census, 1910," database with images, <i>FamilySearch</i> (https://familysearch.org/ark:/61903/1:1:ML5V-CKJ : accessed 15 December 2019), Thomas Roe in household of Frank H Cummings, Jackson Ward 6, Jackson, Michigan, United States ; citing enumeration district (ED) ED 20, sheet 3A, family 43, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 653; FHL microfilm 1,374,666.

Name: Frank H Cumming Event Type: Census Event Date: 1920 Event Place: Jackson Ward 6, Jackson, Michigan, United States Gender: Male Age: 63 Marital Status: Married Race: White Race (Original): White Can Read: Yes Can Write: Yes Relationship to Head of Household: Head Relationship to Head of Household (Original): Head Own or Rent: Own Birth Year (Estimated): 1857 Birthplace: Michigan Father's Birthplace: United States Mother's Birthplace: United States Sheet Letter: B Sheet Number: 18 Household Role Sex Age Birthplace Frank H Cumming Head M 63 Michigan Lucy S Cumming Wife F 58 Michigan SEE BELOW FOR LAWRENCE'S FAMILY LIVING IN HOUSE District: ED 24 Sheet Number and Letter: 18B Household ID: 412 Line Number: 96 Affiliate Name: The U.S. National Archives and Records Administration (NARA) Affiliate Publication Number: T625 Affiliate Film Number: 774 GS Film Number: 1820774 Digital Folder Number: 004966151 Image Number: 00383 Citing this Record "United States Census, 1920," database with images, <i>FamilySearch</i> (https://familysearch.org/ark:/61903/1:1:MZ3K-8Z1 : accessed 15 December 2019), Lucy S Cumming in household of Frank H Cumming, Jackson Ward 6, Jackson, Michigan, United Sta tes; citing ED 24, sheet 18B, line 97, family 412, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 774; FHL microfilm 1,820,774. Name: Laurence G Cumming Event Type: Census Event Date: 1920 Event Place: Jackson Ward 6, Jackson, Michigan, United States Gender: Male Age: 70 Marital Status: Married Race: White Race (Original): White Can Read: Yes Can Write: Yes Relationship to Head of Household: Head Relationship to Head of Household (Original): Head Own or Rent: Rent Birth Year (Estimated): 1850 Birthplace: Michigan Father's Birthplace: Michigan Mother's Birthplace: Michigan Sheet Letter: B Sheet Number: 18 Household Role Sex Age Birthplace Laurence G CummingHeadM70Michigan Pearl L CummingWifeF35Ohio Cortez H CummingSonM14Michigan Edith M CummingDaughterF4Michigan Ethel L CummingDaughterF2Michigan Vera V CummingDaughterF1Michigan District: ED 24 Sheet Number and Letter: 18B Household ID: 413 Line Number: 98 Affiliate Name: The U.S. National Archives and Records Administration (NARA) Affiliate Publication Number: T625 Affiliate Film Number: 774 GS Film Number: 1820774 Digital Folder Number: 004966151 Image Number: 00383 "United States Census, 1920," database with images, <i>FamilySearch</i> (https://familysearch.org/ark:/61903/1:1:MZ3K-887 : accessed 15 December 2019), Vera V Cumming in household of Laurence G Cumming, Jackson Ward 6, Jackson, Michigan, Unite d States; citing ED 24, sheet 19A, line 3, family 413, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 774; FHL microfilm 1,820,774.