Son of Sanders W. McComas & Laura Mary (Heath) McComas who married 28 Jan 1834 in Cabell Co VA and migrated with the extended Heath family into early Platte Co MO in 1839. Israel McComas was named for his maternal grandfather Israel Heath. Israel McComas married twice. He married first 14 Mar 1861 Nancy Jane Elizabeth Horn who died in Oct 1864. He remarried 11 Feb 1866 Martha E. Johnson.Family said that the the time Israel and Martha married, she was a school teacher. It is likely that first wife died from childbirth or complications thereof as she died around the time of birth of Anna McComas. Israel McComas took in his 3 orphaned nephews from his brother Benjamin McComas. Two of them died but one (Sanders W. McComas) survived to adulthood and married. Because he was raised in their household, Sanders W. McComas (the younger) called Israel McComas's children his 'foster-sisters and brothers'. Family said when Israel McComas died he left each child $10,000 in his will including Sanders Witcher McComas, his nephew that he took in to raise.

In his first marriage with Nancy J. Horn he had:
Thomas McComas (no dates, buried Circleville Cem) died before 1865.
Armildred Jane 'Mattie' McComas born 24 May 1862 d. 9 Jan 1921 OK m. 29 Aug 1880 Lyman Allard . 4 Apr 1859 IL and moved to Canadian Co OK.
Anna Lorene McComas born 29 June 1863 married 7 Oct 1896 in Holton, KS Aaron E. Nisewander b. 1864 ( His surname was misspelled on marriage record as Aaron Marvander.)

Israel Heath and 2nd wife Martha had 8 children, 7 were still living in 1900:
Nancy 'Nannie' Elizabeth McComas b. 5 Dec 1866 KS d. 1923 CO m. John R. Eaden
Edna L. McComas born 20 Mar 1868 d. 25 Sept 1947. Single.
Frances Alice McComas born 12 Aug 1869 m. 20 Feb 1889 Francis M. Myers
Harriet 'Hattie' Lois McComas born 1 Aug 1871 KS m. 24 Dec 1891 Robert S. Murray
Marcus Mills MComas b. 8 Mar 1874 KS m. 13 Oct 1892 Laura J. Bailey
Emma Maud McComas b. 20 June 1876 KS d. 1960 married George Augustus Allen Jr
Katherine 'Kate' Gertrude McComas b.6 Mar 1881 d. 23 Apr 1959 never married (buried Circleville Cem.)
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The Hay Free Press May 21, 1910 Israel McComas stated he arrived in Kansas Aug 15, 1855
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A biographical sketch of Israel McComas says he 'was reared on the farm in Platte Co. Mo receiving such an education as could be obtained at the subscription schools in a new country, and laboring as hard as his years would allow between the terms of school. He not only helped to improve the fathers farm there, but also the one in Jackson Co KS to which his father Sanders W. McComas removed. In 1860, Israel McComas went to Pike's Peak with an ox-team, but returned in the fall of the same year, and in the following spring was united in marriage to Miss J.E. Horn, a native of Clay County, MO. Three children resulted from their union, one of them being deceased. Mildred J. is the wife of Lyman Allen of this (Jefferson) township, and Anna is still at home. The first wife of Israel (Nancy J. Horn) died in 1864.

Mr. Israel McComas was again married in Feb 1866, his bride being Miss Martha E. Johnson, a native of the Buckeye state. Her father, Samuel Johnson, was born in new York and came to this county in 1861, dying the same year. This union has resulted in the birth of 7 children. Nancy is the wife of John Eaclen of Jackson county, Edna is a music teacher, Frances is the wife of F.M. Myers of Jackson Co., Hattie, Marquis (Marcus) M., Maud and Katie complete the group. Mr. Israel McComas is a Republican and much interested in the success of the party principles. He has filled the office of Jefferson Township Treasurer. Both he and his wife are members of the Methodist Episcopal Church, and both are among the well-esteemed members of the community. Mr. Israel McComas has made a specialty of stock-raising and feeding. He attributes his success to hard work and good management, and all who know his life concur in this opinion. '