Who was Semiramis and her husband Nimrod? Are they responsible for godesses and religions such as Catholicism along with praying to Mary and so forth? I have read of many "mother and child" religion like in China and in India (correct me if I am wrong). I can't identify many of them now but I hope you get my idea. It seems that the "mother and child" worship came from Semiramis. Is it a myth or fact?
Semiramis is a character of ancient legend, but she is not found in the Bible. Nor was she connected with Catholicism since the legends existed about a 1,000 years before Catholicism started. Wikipedia has a fairly good description of this legend under Semiramis. Historians believe that it is likely there was a woman behind the Semiramis legends, but like all myths reality would be far less and more mundane than what is found in the legends.
Nimrod is mentioned in the Bible, but the name of his wife -- if he had one -- is not mentioned. "Cush begot Nimrod; he began to be a mighty one on the earth. He was a mighty hunter before the LORD; therefore it is said, "Like Nimrod the mighty hunter before the LORD." And the beginning of his kingdom was Babel, Erech, Accad, and Calneh, in the land of Shinar. From that land he went to Assyria and built Nineveh, Rehoboth Ir, Calah, and Resen between Nineveh and Calah (that is the principal city)" (Genesis 10:8-12).