Marmaduke Thweng, 1st Baron Thweng Castle by the English leader John de Warenne, 6th Earl of Surrey. The castle was quickly starved into submission, and Thweng and FitzWarin were taken prisoner to Dumbarton Castle. He was summoned to Parliament in 1307, thus becoming Baron Thweng. At the Battle of Bannockburn in 1314, however, after the English defeat, Sir Marmaduke apparently made no attempt to escape. Instead he wandered over the battlefield until he located Robert the Bruce; only then was he prepared to surrender, and only to the victorious King. Robert recognised Sir Marmaduke and released him and Ralph de Monthermer, also captured, both without
Robert Bruce, 2nd Baron of Clackmannan and killed on 23 July 1403, during the Battle of Shrewsbury, and his son Robert succeeded him as third baron. Robert Bruce, 2nd Baron of Clackmannan Sir Robert Bruce, 2nd Baron of Clackmannan & Rate (died 23 July 1403) 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