To the Editor: Having family in Worthington, I read the (column) in The Globe: “The Knights of Malta: Why you kneel and pray” (April 22 issue). I am glad that Worthington’s Bill Keitel recently had a chance to travel to Malta and share his experiences. While I haven’t been to Malta myself, I have friends and some family there. Centuries ago, some of my ancestors’ brothers were said to have been members of the medieval Order of Saint John (of whi…