sentences:  This proved correct and Lochiel's commitment persuaded others, including his cousin Macpherson of Cluny, who deserted from Loudon's Highlanders before Prestonpans.The process took over three weeks and Lochiel finally did so only when Charles gave him a personal guarantee for "the full value of his estate should the rising prove abortive," and Glengarry provided a written undertaking to raise the Macdonalds.Lochiel's decision was not a surprise to John Cameron or Duncan Forbes, senior government legal officer in Scotland.