Missing links in the family chain

I AM attempting to trace a family living in Cork in the early 20th century. In 1901, in St Luke’s, Emily Keays married a widower by the name of William Smye.

They had two children, Arthur Cecil in 1902, and Dorothy Elizabeth in 1904. William died in 1906.

Emily Keays Smye died in September 1925, in Cork city. She was survived by both her children. At the time of her death she was residing at 31 Grand Parade. I believe this was then a small hotel. I have never been able to find any other record of Arthur and Dorothy and would like to know if they married or left descendants.