Fr Gabriel de Chadarévian op provides an account of the requirements for a good preacher. In a footnote he offers a useful definition of kerygma, one of those words one often sees (in theology I mean) but are rarely explained:
The name, life, the truth, the words and teachings, the signs (healings, exorcisms and miracles), the salvation of Jesus of Nazareth, Son of Man and Son of God, his passion, death on the cross and his bodily resurrection and his return in glory to judge the living and the dead, heaven and hell.
I was amused by the opening sentence.
As a Friar of the Order of Preachers founded in the 13th century, I like to think that I belong to a bloodline of famous preachers and teachers of the Catholic faith, starting with our founder St. Dominic, blessed Jordan of Saxony (his first successor), St. Thomas Aquinas, St. Catherine of Siena, St. Vincent Ferrer, and Father Henri–Dominique Lacordaire, to name a few.
Unless those are all related to each other and Fr de Chadarévian, he cannot possibly belong to a bloodline of all of them.