Sir Robert Bruce, 2nd Baron of Clackmannan & Rate (died between May 1389 and 1393[1]) was the son of Sir Thomas Bruce 1st Baron of Clackmannan and Marjorie Charteris of Stenhouse.
Robert Bruce was born in Clackmannan, Scotland the son of Thomas Bruce, 1st Baron of Clackmannan and his wife Marjory. Robert received more land in Clackmannan in 1359 from his cousin, King David II, and additional land in Rate, Scotland in 1367.
He married Isabel Stewart the daughter of Robert Stewart of Durisdeer, Fife with whom he had at least four children:
Robert died between 1389 and 1393 and his son Robert succeeded him as third baron.