s , ▁offices , ▁and ▁the ▁residence ▁for ▁bar ons , ▁counts , ▁and ▁noble ▁visitors ▁during ▁the ▁summer . ▁Political ▁connections ▁through ▁de als , ▁commerce ▁and ▁military ▁control ▁against ▁the ▁French ▁guaranteed ▁almost ▁six ▁hundred ▁years ▁of ▁influence . ▁ ▁The ▁surname ▁Bo os ▁is ▁related ▁to ▁ancient ▁media eval ▁German ▁words ▁meaning ▁" le ad ", ▁" no blem an ", ▁or ▁" ang ry ", ▁possibly ▁used ▁to ▁indicate ▁the ▁residents ▁of ▁the ▁castle , ▁hence ▁the ▁name ▁variation ▁" Cast le ▁of ▁Bo os - W al deck " ▁seen ▁in ▁some ▁documents . ▁In ▁French ▁it ▁is ▁c ited ▁as ▁the ▁castle ▁of ▁" Bo is ▁Wal the c ce " ▁or ▁" Bo os se ▁de ▁Wal the c ce ". ▁ ▁Below , ▁near er ▁the ▁valley , ▁the ▁lower ▁ba iley ▁was ▁established , ▁possibly ▁to ▁enc lose ▁the ▁houses ▁of ▁the ▁joint ▁own ers ▁of ▁the ▁castle . ▁It ▁is ▁possible ▁that ▁the ▁lower ▁w ard ▁had ▁been ▁built ▁around ▁ 1 2 5 0 ▁by ▁the ▁a for esa id ▁Rudolf ▁( U do ). ▁Some ▁documents ▁mention ▁both ▁w ards ▁of ▁the ▁castle ▁in ▁ 1 2 8 5 . ▁The ▁rem n ants ▁of ▁the ▁lower ▁ba iley ▁were ▁only ▁redis cover ed ▁and ▁identified ▁as ▁such ▁in ▁recent ▁years ▁when ▁the ▁land ▁was ▁pros pected . ▁ ▁With ▁the ▁new ▁building ▁of ▁the ▁com ital - Pal at ine ▁tower , ▁the ▁castle ▁now ▁consisted ▁of ▁three ▁parts :