William E. Koenig was installed as the 10th Bishop of Wilmington on Tuesday in an ordination mass held at St. Elizabeth Church in Wilmington.

In April, Pope Francis named Koenig, vicar for clergy for the Diocese of Rockville Centre, N.Y., to lead the Catholic Diocese of Wilmington, which includes St. Francis de Sales in Salisbury.

Koenig follows the Most Rev. W. Francis Malooly, who has served as bishop of the Catholic community of Delaware and Maryland’s Eastern Shore since 2008.

The new bishop was ordained to the Order of Bishop by Archbishop William Lori, Metropolitan Archbishop of Baltimore. It was only the second time that an ordination of this type has taken place within the diocese. The first was Bishop John J. Monaghan’s episcopal consecration by Cardinal Gibbons of Baltimore in 1897 at the Cathedral of St. Peter in Wilmington.

All other Wilmington bishops were ordained to the order outside of Delaware or Maryland’s Eastern Shore prior to being installed as Bishop of Wilmington.

In addition to Archbishops Lori and Pierre and Bishop Malooly, 20 Catholic bishops attended Tuesday’s event, including two cardinals.

Born Aug. 17, 1956, in Queens, N.Y., Koenig grew up in East Meadow, N.Y., where he and his family were parishioners of St. Raphael’s Church. He attended St. Raphael’s Elementary School; St. Pius X Preparatory Seminary in Uniondale, N.Y.; Cathedral College in Douglaston, N.Y.; and the Seminary of the Immaculate Conception in Huntington, N.Y. After ordination, he also attended Fordham University, where he received a master’s in Social Work.

The Catholic Diocese of Wilmington was established in 1868 and comprises 56 parishes, 18 missions and 27 schools serving the State of Delaware and the nine counties of Maryland’s Eastern Shore. There are more than 240,000 Catholics in the diocese.