Census for mother of Pope Leo XIV

Census for Joseph and Louise Martinez Household

By Peter Biggins, QPS 1953-1956

Daughter Mildred married Louis Prevost in 1949. She became the mother of Robert Francis Prevost in 1955. He became Pope Leo XIV in 2025. In 1930, Mildred, 18, lived at 881 Rush Street in Chicago, a short block from Quigley Preparatory Seminary.

	1900	1910	1920	1930	1940
Source	Image	Image	Image	Image	Image
Index Name	Martinez	Martina	Martinez	Martinez	Martinez
Address	1933 Prieur Street, New Orleans, Louisiana	510 St. Peter Street, New Orleans, Louisiana	63 W. Superior Street, Chicago, Illinois	881 Rush Street, Chicago, Illinois (one short block from Quigley Preparatory Seminary)	12 E. Cedar Street, Chicago, Illinois
Head of Household	Joseph, 36, born January 1864, black, married 13 years, cigar maker, born in Hayti, parents born in Louisiana, immigrated in 1867, owner	Joseph N., 45, married 23 years, office clerk, born in Santo Domingo, father Maltese, mother Spanish, immigrated in 1868, naturalized, renter	Joseph, 55, not employed, born in Haiti, parents born in Louisiana, immigrated in 1867, naturalized in 1872, renter	Joseph died in 1926
Wife, Head of Household in 1930 and 1940	Louise, 32, born February 1868, black, born in Louisiana, parents born in Louisiana	Louise, 42, 6 children, 6 living, born in Louisiana, parents born in Germany	Louise, 51, born in Louisiana, parents born in Louisiana	Louise, 62, widow, married at 19, nut & candy tester at factory, born in Louisiana	Louise, 70, widow, born in Louisiana, renter
Daughter	Irma, 4, born November 1895, black, born in Louisiana	Irma, 14, in school, born in Louisiana	Irma, 24, general office clerk, born in Louisiana
Daughter	Margaret, 2, born May 1898, black, born in Louisiana	Margherite, 11, in school, born in Louisiana	Marguerite, 21, general office clerk, born in Louisiana
Daughter		Lydia, 9, in school, born in Louisiana	Lydia, 19, in high school, born in Louisiana	Lillian, 27, married at 25, born in Louisiana
Son-in-law				John F. Plum, 30, married at 28, doorman at department store, born in Wisconsin
Grandson				John J. Plum, 7/12, born in Illinois
Daughter		Louise, 6, born in Louisiana	Louise, 15, in high school, born in Louisiana
Daughter		Hilda, 3, born in Louisiana	Hilda, 13, in school, born in Louisiana
Daughter		Ethel, 1, born in Louisiana	Ethel died in 1911
Daughter			Mildred, 8, born in Illinois	Mildred, 18, born in Illinois	Mildred, 28, librarian at public library, born in Illinois
Aunt	Josephine Lazard, 74, born September 1825, black, born in Louisiana, father born in Louisiana, mother born in Cuba

In the 1950 census, Mildred, 37, was married to Louis Prevost, 29, a public school principal. They were living in Dolton, just south of Chicago. They had no children. Louis had served in the Armed Forces in World War II. His mother and father were born in France.

Mildred's mother Louise had died in 1945 and was buried in All Saints Cemetery in DesPlaines, Illinois.

Pope Leo XIV and his two older brothers were all born in the 1950s and should show up in the 1960 census, when it is made public in 2032.