From  Vatican News: 

Pope Francis on Wednesday advanced the causes for canonization of twelve holy men and women, authorizing the publication of decrees recognizing various miracles, as well as the martyrdom of an Italian missionary in El Salvador and a group of Cistercian monks in Italy.

The Congregation for the Causes of the Saints recognized miracles attributed to the intercession of Venerable Father Michael McGivney, founder of the Knights of Columbus; and to Venerable Pauline-Marie Jaricot, foundress of the Society for the Propagation of the Faith and the Living Rosary Association. The way is now cleared for the two to be beatified.

Miracles were also attributed to three Blesseds: Charles de Foucauld, Cesare de Bus, and Maria Domenica Mantovani. The official acceptance of the miracles means that all three can now be canonized.

The Congregation also determined that Franciscan priest Cosma Spessotto was killed in odium fidei, that is, out of hatred of the faith. Father Cosma was a missionary in El Salvador who was martyred in 1980.

Finally, the Congregation recognized the martyrdom of six Cistercian monks who were killed as they tried to safeguard the Eucharist when their abbey was attacked by French soldiers during the Napoleonic wars.

About Father McGivney, via Wikipedia:

He was born to Irish immigrant parents, Patrick and Mary (Lynch) McGivney. He was the eldest of 13 children, six of whom died in infancy or childhood. His father worked as a molder in a Waterbury, Connecticut, brass mill. Michael attended the local Waterbury district school but left at 13 to work in the spoon-making department of one of the brass mills.

In 1868, at the age of 16, he entered the Séminaire de Saint-Hyacinthe in Saint-Hyacinthe, Quebec, Canada. He continued his studies at Our Lady of Angels Seminary, near Niagara Falls, New York(1871–1872) and at the Jesuits’ St. Mary’s College, in Montreal, Quebec. He had to leave the seminary, returning home to help finish raising his siblings after the death of his father, in June 1873. McGivney later resumed his studies at St. Mary’s Seminary, in Baltimore, Maryland; he was ordained a priest on December 22, 1877, by Archbishop James Gibbons at the Baltimore Cathedral of the Assumption.

From his own experience, McGivney recognized the devastating effect on immigrant families of the untimely death of the father and wage earner. Many Catholics were still struggling to assimilate into the American economy. On March 29, 1882, while an assistant pastor at Saint Mary’s Church in New Haven, Connecticut, McGivney founded the Knights of Columbus, with a small group of parishioners, as a mutual aid society, to provide financial assistance, in the event of the men’s deaths, to their widows and orphans. The organization developed as a fraternal society. McGivney was also known for his tireless work among his parishioners.

There’s more about his life and legacy at a website devoted to his cause. Below is a short profile about him produced by Salt + Light.