the place where this castle is located, where did it get its name from?
From the Brittonic "lǭwadr".
Lauder
The name may be derived from the Brittonic "lǭwadr", meaning "washing or bathing place" (Breton "laouer"). Or else, Lauder may be named from a word related to Middle Welsh "llawedrawr", "a heap of ruins".
when was architect william bruce born? Around 1630. was he involved in politics? Yes, in 1660. which notable houses did he design? Thirlestane Castle and Panmure House. where is the castle located? Near Lauder. which family is commonly associated with it? Maitland family. do they still own it? No
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Lauder [SEP] Etymology
Although Lauder sits in the valley of Leader Water, Watson notes that the names Lauder and Leader appear to be unconnected. In the earliest sources Lauder appears as "Lawedder" and "Loweder". The name may be derived from the Brittonic "lǭwadr", meaning "washing or bathing place" (Breton "laouer"). Or else, Lauder may be named from a word related to Middle Welsh "llawedrawr", "a heap of ruins".