Elizabeth Munro, Duncan Munro & Charles Munro

Hello, I am Looking for a Elizabeth Munro who was born abt 1875-76 in Glasgow to Duncan & Sarah [Mcqauter] Munro. She was not on the 1901 census so am assuming she was married by then. Also looking for her two brother's #1 Duncan born abt 1880 in Kilmun and Charles born abt 1874-75 in Kilmun. Charles was not on the 1901 census either so am assuming he had left home by then. Would appreciate hearing from anyone in regards to these people. Thank you..