Yedidya was born in Plovdiv  Bulgaria on October 30,1927, to  Ora and Shlomo. As a child he studied in a Cheder, then a local school. He was a member of Beitar. Yedidya came to Israel with the Youth Aliyah 1944, and was brought to Kvutzat-Schiller.  He soon moved to Tel-Aviv and joined Lehi.

He underwent a weapons training course. He helped prepare the weapons for the attack on the Sirkin military airport, participated in the attack on the Red Berets base (the “Poppies”) Tel-Aviv, laying mines to delay the British, and other activities. On June 17,1946 he took part in the great assault on the Haifa Railroad Workshops. The operation succeeded but when retreating the fighters encountered a British roadblock of armoured-vehicles  which opened a barrage of deadly fire upon them: eleven fighters were killed, twenty-three men and women taken prisoner including Yedidya. Ten escaped.

At the beginning of the  trial they declared that the British court had no right whatsoever to judge them since they considered themselves prisoners of war, therefore refused to collaborate with their trial proceedings; they defiantly sang inspirational songs through its duration. The British continued the trial with the accused away in prison after passing a special law permitting this procedure. Two days later, in prison, they discovered   their verdict  – the death sentence. It was eventually commuted to life imprisonment. After establishment of the State and the IDF, Yedidya enlisted, and served in  the 89th Battalion, 8th Brigade participating in all its battles. He married Aliza Kemach January 10,1950 and they had two children – daughter Ziva and  son  Benny, plus three grandchildren. He went abroad on a security mission 1963, and was settled in Paris with his family three and a half years. In 1968 he was sent abroad again to help bring North Africa’s Jews to Israel.

After two years he returned to Israel with his family. In 1971 he went abroad  with his wife, working in tourism. On return he opened his own Tel-Aviv travel-agency. Yedidiya  passed  away after a  lengthy  illness  August 23, 1992. He was laid to rest at  Kiryat-Shaul Cemetery, Tel-Aviv.