▁ 1 6 1 6 ▁to ▁ 1 6 2 4 , ▁Lam bert ▁was ▁mostly ▁active ▁in ▁the ▁Mediter rane an ▁to ▁protect ▁Dutch ▁mer ch ants ▁from ▁the ▁Barb ary ▁pir ates ▁and ▁in ▁ 1 6 1 8 ▁te amed ▁up ▁with ▁the ▁Spanish ▁to ▁defeat ▁the ▁Al ger ian ▁cors air ▁fleet . ▁In ▁ 1 6 2 2 , ▁he ▁negoti ated ▁a ▁peace ▁agreement ▁with ▁the ▁P asha ▁of ▁Al gi ers ▁to ▁leave ▁Dutch ▁merchant ▁sh ipping ▁un m ol ested . ▁After ▁this ▁treat y ▁was ▁broken ▁by ▁the ▁Al ger ians , ▁Lam bert ▁was ▁sent ▁to ▁take ▁pun itive ▁action ▁against ▁the ▁Barb ary ▁pir ates ▁and ▁through ▁har sh ▁negoti ations ▁managed ▁to ▁force ▁the ▁Al ger ians ▁to ▁set ▁hundreds ▁of ▁Christian ▁slaves ▁free . ▁ ▁After ▁his ▁death , ▁having ▁served ▁the ▁Admir alty ▁of ▁Rot ter dam ▁for ▁over ▁ 4 0 ▁years , ▁Lam bert ▁was ▁given ▁a ▁grave ▁mem orial ▁in ▁St . ▁Laur ens ▁Church ▁in ▁Rot ter dam . ▁ ▁Category : 1 6 th - century ▁Dutch ▁people ▁Category : 1 7 th - century ▁Dutch ▁military ▁personnel ▁Category : 1 5 5 0 s ▁birth s ▁Category : 1 6 2 5 ▁death s ▁Category : Ad mir als ▁of ▁the ▁n avy ▁of ▁the ▁Dutch ▁Republic ▁Category : D utch ▁people ▁of ▁the ▁E ight y ▁Years ' ▁War ▁( Un ited ▁Provin ces ) ▁Category : Pe ople ▁from ▁Rot ter