George de Lalaing, Count of Rennenberg was his uncle.
He married Alexandrine de Langlee and was succeeded by his son Albert-François de Lalaing, 7th Count of Hoogstraeten.
During his life he was governor in service of the Spanish crown.
He participated in the Solemn funeral of the archduke,[2] as knight of the Golden Fleece; this honour was given to him in 1621.
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