The children are a "result of affairs involving priests and laywomen or nuns – others of abuse or rape".
[1] Not many of these children are known, but the most famous is probably Vincent Doyle, who has started a support group, Coping International.
[1] In 2009, the Vatican under Pope Benedict XVI and Cardinal Cláudio Hummes composed guidelines for the children of priests.
The official name of the document is "Congregazione per il Clero a proposito dei chierici con prole" (Notes concerning the practice of the Congregation for the Clergy with regard to clerics with children).
[3] In 2020, the Congregation for Clergy released the guidelines to Vincent Doyle.