Testimonies of the existence of Mary and Joseph There are 30+ historical accounts of Jesus's existence. A subset of these would also seem to be evidence for the existence of Mary and Joseph.

What is the historical evidence (besides what is recorded in Holy Scriptures) of the existence of Mary and Joseph?
Though Joseph and Mary are not mentioned directly, Josephus writes about 93 CE an account of James, brother of Jesus.


  Festus was now dead, and Albinus was but upon the road; so he assembled the sanhedrim of judges, and brought before them the brother of Jesus, who was called Christ, whose name was James, and some others, [or, some of his companions]; and when he had formed an accusation against them as breakers of the law, he delivered them to be stoned:
  https://www.ccel.org/ccel/josephus/complete.ii.xxi.ix.html


In addition, Clement of Alexandria circa 200 CE wrote about Joseph and Mary, though this reference is only found in Eusebius.


  
  Then James, whom the ancients surnamed the Just on account of the excellence of his virtue, is recorded to have been the first to be made bishop of the church of Jerusalem. This James was called the brother of the Lord because he was known as a son of Joseph, and Joseph was supposed to be the father of Christ, because the Virgin, being betrothed to him, “was found with child by the Holy Ghost before they came together,” as the account of the holy Gospels shows.
  https://www.ccel.org/ccel/schaff/npnf201.iii.vii.ii.html