stepson Spanish Meaning

...tepson. Also my wife became mother in-law of her father-in-law- Then the daughter of my wife, my stepmother had a son. This boy was my half brother because he was my father-s son, but he was also the son of my wife-s daughter, which made him my wife-s grandson. That made me the grandfather of my half brother. This was nothing until my wife and I had a son. Now the sister of my son, my mother-in-...