Here is some of my research on this branch of the family. Please contact me if you have anything to add!

1 John JERGER II
Birth: 18 Nov 1854, Indiana
Death: 16 Mar 1929, age: 74
Father: Joseph JERGER (1819-1903)
Mother: Maria Anna BIRK (1828-1896)
Spouse: Elizabeth HERBIG
Birth: 17 Aug 1860, Jasper, Dubois, Indiana
Death: 22 May 1913, Jasper, Dubois, Indiana, age: 52
Father: Henry HERBIG (~1824-)
Mother: Rosina ??? (~1824-)
Marr: 5 Mar 1886

Children: Joseph Aloysius (1887-)
Rosalia (1889-1910)
Helena Mary (1890-1953)
Katherina (1893-1951)
Amelia Theresia (1895-1948)
Elizabeth Josephina (1896-1959)
Maria (1899-1982)
Victoria (1902-)
In 1900 the family was living in Bainbridge Township, Dubois County, Indiana next door to John’s sister, Mary Anne and her husband, Anton Eckstein and their three children.
In 1910 the family was living in Boone Township, Dubois County, Indiana. Joseph, Helena, Katharine, Emilia, Josephina, Mary and Victoria were at home.

1.1 Joseph Aloysius JERGER
Birth: 29 Oct 1887
Spouse: Helena T. DUPPS
Birth: 19 Dec 1890, Indiana
Father: Benedict DUPPS (1859-)
Mother: Mary ??? (1864-)

Children: Harold J. (~1912-)
Mary Anne (~1914-)
Mildred H. (1916-)
Helen Amelia (1917-1937)
Alice M. (1920-)
Joan D. (~1922-)
John A. (~1926-)
Charles P. (1928-)
Unknown
Infant (1933-1933)
Unknown
In 1920 the family lived in Boone Township, Indiana.
In 1930 they were still there.

1.2 Rosalia JERGER
Birth: 24 Mar 1889
Death: 30 Jan 1910, Ireland, Indiana, age: 20

1.3 Helena Mary JERGER
Birth: 28 Dec 1890, Indiana
Death: 8 Feb 1953, St. Gabriel, California, age: 62

Spouse: William Randall DORRIS
Birth: 13 Aug 1886, Harrisburg, Illinois
Death: 27 Oct 1957, Los Angeles, California, age: 71
Father: William Perry DORRIS (1862-1934)
Mother: Druscilla JONES (1862-)
Marr: 1914
Children: John Perry (1917-1992)
Druzilla E. (1920-)
Maurice T. (1923-)

1.4 Katherina JERGER
Birth: 28 Feb 1893
Death: 14 Jan 1951, age: 57

Spouse: Virgil J. GRAMELSPACHER
Birth: Dec 1891, Indiana
Father: George GRAMELSPACHER (1867-)
Mother: Mary A. HALLER (1866-)
Marr: 12 Oct 1915

Children: Dolores M. (~1917-)
John W. (~1922-)
Betty J. (~1935-)
Pustauer M. (~1928-)

1.5 Amelia Theresia JERGER
Birth: 27 Jan 1895
Death: 17 Jul 1948, age: 53

Spouse: Paul Louis MISCHEL
Birth: 1 May 1897, Owensboro, Kentucky
Death: 6 Dec 1972, Daviess County, Indiana, age: 75
Father: George MISCHEL (1857-)
Mother: Anna C. ??? (1867-)
Marr: 20 Jun 1920

Children: Elizabeth (~1923-)

1.6 Elizabeth Josephina JERGER
Birth: 23 Nov 1896, Indiana
Death: 1 Aug 1959, age: 62

Spouse: Edward LAMPERT
Marr: 24 Jun 1924

1.7 Maria JERGER
Birth: 13 Aug 1899
Death: 23 Oct 1982, age: 83

Spouse: Clarence Urban GRAMELSPACHER
Birth: May 1897, Indiana
Birth: 25 May 1897,
Father: George GRAMELSPACHER (1867-)
Mother: Mary A. HALLER (1866-)
Marr: 25 May 1927

Children: Rose Marie (~1928-)
Gene (~1927-)

1.8 Victoria JERGER
Birth: 12 Feb 1902
Spouse: Edgar DITTMER
Birth: abt 1902, Indiana
Children: John Joseph (~1927-)
Shirley Ann (~1930-)