The family would have moved between the castles of their lordships—Lochmaben Castle, the main castle of the lordship of Annandale, and Turnberry and Loch Doon Castle, the castles of the earldom of Carrick. A significant and profound part of the childhood experience of Robert, Edward and possibly the other Bruce brothers (Neil, Thomas and Alexander), was also gained through the Gaelic tradition of being fostered to allied Gaelic kindreds—a traditional practice in Carrick, southwest and western Scotland, the Hebrides and Ireland. There were a number of Carrick, Ayrshire, Hebridean and Irish families and kindreds affiliated with the Bruces who might have performed such a service (Robert's foster-brother is referred to by Barbour as sharing Robert's precarious existence as an outlaw in Carrick in 1307–08). This Gaelic influence has been cited as a possible explanation for Robert the Bruce's apparent affinity for "hobelar" warfare, using smaller sturdy ponies in mounted raids, as well as for sea-power, ranging from oared war-galleys ("birlinns") to boats.