Elijah Joseph Conklin was born the youngest of eight children to Bridget "Delia" Farrell and John Hiram Conklin on June 2, 1905 in New York.

He had seven older siblings; William Francis "Teeter Bill", Lillian Mary, Harriet C. "Hattie", Anna E. "Annie", John Hiram Jr., Charles Phillip, and Nora A. Conklin.

Elijah married Marguerite Elizabeth Mulhair on February 4, 1929. Together they had nine children who survived into adulthood; Harriet Alice, Robert Elijah, Marguerite Elizabeth, Rosemarie "Rosie", Charles Philip, Ann E. "Annie", Bernice A., Eugene Francis, and William Joseph Conklin. They had another son, also named William Joseph Conklin, who was born and passed sometime before 1946.

Elijah passed away on February 15, 1976 in Sloatsburg, Rockland, New York. He was buried in Airmont Lutheran Cemetery in Suffern, Rockland, New York.

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Son of:
Bridget "Delia" Farrell Conklin (1866-1909) and John Hiram Conklin (1866-1931)

Brother of:
William Francis "Teeter Bill" Conklin (1887-1982), Lillian Mary Conklin Gannon (1890-1981), Harriet C. "Hattie" Conklin Cooney (1891-1934), Anna E. "Annie" Conklin Kosbob (1894-1976), John Hiram Conklin Jr. (1895-1975), Charles Phillip Conklin (1897-1983), and Nora A. Conklin Miller (1900-1920)

Husband of:
Marguerite Elizabeth Mulhair Conklin (1907-1989)

Father of:
Harriet Alice Conklin Sorgine (1929-Living), Robert Elijah Conklin (1931-2015), Marguerite Elizabeth Conklin Vetter (1933-2000), Rosemarie "Rosie" Conklin Van Houten (1935-2000), Charles Philip Conklin (1938-2012), Ann E. "Annie" Conklin Brown (1939-2012), Bernice A. Conklin Bulson Siegmund (1940-2011), Eugene Francis Conklin (1944-2018), William Joseph Conklin (bef. 1946-bef. 1946), and William Joseph Conklin (1946-Living)

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1910 U.S. Census residence Ramapo, Rockland, New York; age 3
1930 U.S. Census residence Sloatsburg, Rockland, New York; age 24
1940 U.S. Census residence Sloatsburg, Rockland, New York; age 34
U.S. Social Security Death Index