Strathlachlan is the home to the Clan Maclachlan
; Euan Maclachlan of Maclachlan is the 25th Clan Chief. Old Castle Lachlan was built at the beginning of the fourteenth century about the time of the Battle of Bannockburn.
It remained the home of the Maclachlan of Maclachlan until it was bombarded from the sea in 1746 by an English warship following the defeat of the Jacobites at the Battle of Culloden. This was retribution against the Maclachlans for joining in the unsuccessful rebellion. Lachlan Maclachlan, the Chief, ADC to Bonnie Prince Charlie was killed in the battle.
The New Castle started life as a Queen Anne style house at the end of the eighteenth century. At the end of the nineteenth the Scottish baronial transformation was undertaken.