A Narrative History
The People of Iowa
SPECIAL TREATMENT OF THEIR CHIEF ENTERPRISES IN
EDUCATION, RELIGION, VALOR, INDUSTRY,
EDGAR RUBEY HARLAN, LL. B., A. M.
Curator of the
Historical, Memorial and Art Department of Iowa
THE AMERICAN HISTORICAL SOCIETY, Inc.
Chicago and New York
ISIDORE P. MANTZ. In the somewhat complicated and difficult position of
consulting actuary, Isidore P. Mantz has won a broad and substantial reputation
among the insurance men of Des Moines. Actively engaged in life insurance
work for more than thirty years, he is the author of technical and other works
on this subject. His career has been a very active and useful one, and few
men are more highly esteemed in the insurance field.
Mr. Mantz was born June 2, 1872, in Alsace-Lorraine, France, and is a son of
Isidore and Catherine (Schneider) Mantz. His father, born in
Alsace-Lorraine, France, immigrated to the United States and settled in Lee County, Iowa,
and was engaged in the real estate and insurance business until his death. He
was a member of the Catholic Church and a man who was highly esteemed in his
community. He and his worthy wife, also a native of France and now
deceased, became the parents of seven children, of whom four are living: Isidore P.;
Joseph L., a jeweler and diamond broker of Peoria, Illinois; Mrs. John
O'Brien, of Louisiana, Missouri; and A. F., an architect and landscape gardener of
After attending public schools Isidore P. Mantz took a business course and
then entered the insurance office of his father. In 1894 he entered the
profession of consulting actuary, and has continued in this business to the
present, having attained a great success therein. He has traveled extensively all
over the United States in this line of work, in which he is an acknowledged
expert and authority. Mr. Mantz is the author of a number of technical and
popular works on life insurance and economic subjects, and has been an extensive
contributor to both the insurance and secular press on these subjects. He
is credited with having been the author of the double indemnity clause in
insurance, and in 1918 originated and promulgated, through the Western Life and
the Des Moines Life and Annuity Company, a form of policy known as educational
or child's endowment, which marks the inauguration of an entirely new branch
of life insurance service. As a consulting actuary Mr. Mantz specializes in
the preparation of policy forms, special calculations and the installation
of systems of accounts and home office methods.
In 1892 Mr. Mantz was united in marriage with Miss Bernadena Schwartz, who
was born and educated at Peoria, Illinois, and they have had four children:
Mrs. William Steinbrecher, the wife of a contractor and grocer of West Chicago,
Illinois; Martha, the wife of William F. Goodson, an army man in the
Government service, stationed at San Antonio, Texas; Paul N., born September 25,
1897, educated at Oklahoma University and Drake University, formerly general
agent of the Pacific Mutual Life Insurance Company of Des Moines, and is now
assistant secretary of the Lincoln Life Insurance Company of Fort Wayne,
Indiana; and B. J., who volunteered in the United States Army among the first after
the United States had entered the World war, and was the first soldier from
Oklahoma who died in camp.
Mr. Mantz and his family are members of St. John's Catholic Church, and he
belongs to the Knights of Columbus, the Modern Woodmen of America and the Des
Moines Actuary Club. His commodious offices are located in the Insurance
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*Check stated facts, do not know how accurate.
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