Biography.guide
Home › People › Catholic priest › Michael Heiss
Portrait of Michael Heiss

Michael Heiss

1818 – 1890

Roman Catholic Church cleric

Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About Michael Heiss

Lived 1818 – 1890 (aged 71). Michael Heiss was a German catholic priest and catholic bishop.

Michael Heiss (12 April 1818 – 26 March 1890) was a German-born American Catholic prelate who served as archbishop of Milwaukee in Wisconsin from 1881 to 1890. He previously served as the first Bishop of La Crosse in Wisconsin (1868–1880).

Biography

Early years Michael Heiss was born on April 12, 1818, in Pfahldorf in the Kingdom of Bavaria (now part of present-day Kipfenberg, Germany), to Joseph and Gertrude (née Frei) Heiss. He received confirmation when he was only two years old because his parents feared they would be without a bishop for a prolonged period of time due to tension between church and state. Heiss entered a Latin school at age nine, and later graduated from the gymnasium of Neuburg, Bavaria, in 1835.

Heiss then entered the Ludwig-Maximilians-Universität München, where he originally studied law but switched to theology after deciding to join the priesthood. He completed his studies at the Collegium Willibaldum, a seminary in Eichstätt, Bavaria. Because, at age 22, he was younger than the age requirement for ordination, Heiss was granted a dispensation by Pope Gregory XVI. Heiss in 1849 attended the first Plenary Council of Baltimore, a meeting of all the bishops in the United States. At this time, the German Catholics in Milwaukee were pressing Henni for a German-language national parish. In response, Henni erected St. Mary's Parish in Milwaukee and assigned Heiss as its first pastor.

While at St. Mary's, Heiss' health deteriorated, forcing him to spend the next two years in Europe recuperating. In 1856, after Heiss returned to Wisconsin, Henni appointed him as rector of St. Francis de Sales Seminary in St. Francis, Wisconsin. Heiss opened Christ King Chapel at the seminary in 1861. He served as rector at St. Francis until 1868.

Bishop of La Crosse Mary of the Angels Chapel, St. Rose of Viterbo Convent, La Crosse, Wisconsin (2009) Pope Pius IX on March 3, 1868, erected the Diocese of La Crosse in Wisconsin and appointed Heiss as its first bishop. He was consecrated at the Cathedral of St John the Evangelist in Milwaukee on September 6, 1868, by Henni.

When the diocese was erected, it had 22 priests, 23 churches and approximated 50 stations. The diocese included national parishes for Irish, German, Polish and Italian immigrants. The diocese at this time was financially-strapped and reliant on foreign donations for its operations. That same year, he returned to Baltimore for the Second Plenary Council.

In 1870, Heiss traveled to Rome to attend the First Vatican Council. The new cathedral was dedicated that year during his absence. After the conclusion of the conference, Heiss traveled to Bavaria to visit friends and family and to recruit more clergy for his diocese.

In 1871, at Heiss' request, the Franciscan Sisters of Perpetual Adoration transferred from Jefferson, Wisconsin to Milwaukee, where they built the St. Rose of Viterbo Convent. The sisters had previously worked with Heiss, managing the household responsibilities at Saint Francis de Sales Seminary. That same year, they opened St. Rose High School in La Crosse.

Coadjutor Archbishop and Archbishop of Milwaukee On March 14, 1880, Heiss was appointed coadjutor archbishop of Milwaukee by Pope Leo XIII to assist Henni. On September 7, 1881, after Henni's death, Heiss automatically succeeded him as archbishop of Milwaukee.

As archbishop, Heiss reduced the archdiocesan debt and created a school board for the growing number of archdiocesan schools. He promoted the teaching of English in the parish schools and worked to recruit more American women into the religious orders. In 1884, Heiss attended the Third Plenary Council of Baltimore.

Death and legacy Michael Heiss died in La Crosse, Wisconsin, on March 26, 1890, at age 71. He was buried at Christ King Chapel in St. Francis de Sales Seminary.

Publications

The Four Gospels Examined and Vindicated on Catholic Principles, Milwaukee, Hoffman Brothers, 1863 "De Matrimonio", an essay in Latin

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Birth century
Nationality
Positions held
Roman Catholic Archbishop of Milwaukee, Titular archbishop, Roman Catholic Bishop of La Crosse

People in Michael Heiss's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Michael Heiss's

Frequently asked questions

Who was Michael Heiss?

Roman Catholic Church cleric

When was Michael Heiss born?

Michael Heiss was born on 12 April 1818 in Bavaria, Germany.

When did Michael Heiss die?

Michael Heiss died on 26 March 1890 in La Crosse.

What was Michael Heiss's occupation?

Michael Heiss was a catholic priest and catholic bishop.

What nationality was Michael Heiss?

Michael Heiss was German.

Sources & further reading

· Wikipedia: Michael Heiss

· Wikidata: Q6831058

· DBpedia: Michael Heiss

Cite this page

APA: Biography.guide. (2026). Michael Heiss. https://biography.guide/michael-heiss/

MLA: "Michael Heiss." Biography.guide, https://biography.guide/michael-heiss/.

Chicago: "Michael Heiss." Biography.guide. https://biography.guide/michael-heiss/.

Data last updated: 2026-09-22 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

Page generated 2026-09-27 05:04 UTC