Was St. Joseph always a righteous man?

We read at Mtt 1:18-19 (NRSVCE): > Now the birth of Jesus the Messiah took place in this way. When his mother Mary had been engaged to Joseph, but before they lived together, she was found to be with child from the Holy Spirit. Her husband Joseph, being a righteous man and unwilling to expose her to public disgrace, planned to dismiss her quietly. That implies that St. Joseph had always been a righteous man-- even before he was betrothed to Mary, and his decision to dismiss Mary quietly, would top up his righteousness. My question therefore is: are there stories available in Catholic tradition which throw light on the pre-betrothal life of St. Joseph , and which would substantiate that he was always a righteous man ?