Jacob was the father of Joseph, the husband of Mary. Of her was born Jesus who is called the Christ. (Mt 1:16, 18-21, 24a)
https://bible.usccb.org/bible/readings/032023.cfm
Saint Joseph’s feast day is normally observed on March 19. But because yesterday was a Sunday of Lent, a privileged liturgical season, Saint Joseph’s Day is transferred to today. Sometimes Saint Joseph gets overlooked, but the role he plays in the Holy Family is extremely important. Because he seems to be absent from the later part of the gospels, it was assumed that he had died. And so, Saint Joseph becomes the patron saint of a holy death, because he died in the arms of Jesus and Mary.