Melanie McCabe is the author of “His Other Life: Searching for My Father, His First Wife, and Tennessee Williams.” She is an English teacher at Yorktown High School in Arlington, Va. I was only 16 years old when my father died. Shortly after the funeral, I sat with my mother and peppered her with questions about this man who had been taken away from me too soon. I knew him only as Daddy, in that limited way a child knows a parent, and I longed to create a fuller picture of who he had been before I was born. That day my mother revealed to me a secret that my father had wanted to keep hidden from my sister and me: He had been married before my mother, for 12 years. This fact was both astonishing and tantalizing. I badgered Mom for every tidbit she might share. She let the story slip out in pieces. Something had gone wrong in my dad’s first marriage. The woman had died in 1951 in some mysterious way, in the company of another man. Her name had been Hazel Kramer before she became Hazel McCabe. Mom added, seemingly as an afterthought, “I know that she used to be Tennessee Williams’s girlfriend.” “His Other Life,” by Melanie McCabe (University of New Orleans Press) [Tennessee Williams and the menagerie that made up the life of a legendary playwright] I was thrilled at this revelation. Two years later, when Williams’s “Memoirs” came out, I raced to get a copy, fascinated to find my father mentioned as the man who had stolen Hazel away, breaking young Tom Williams’s heart. My dad had been a wonderful and devoted father, but the picture of him as “the other man,” capable of stealing another fellow’s girl, was not the image I held. The story turned him into someone far more intriguing than I had ever thought he was. I savored this tangential brush with fame, and years later, as a high school teacher, I enjoyed introducing my students to “A Streetcar Named Desire” and milking my juicy backstory for all it was worth. For a long time, I knew nothing beyond this. Then, in 2013, a friend asked if I knew that in one of Williams’s late plays, there was a character named Terrence McCabe — my father’s name. Excited, I obtained a copy of “The Red Devil Battery Sign” to learn that