A variant of Lake or a diminutive of Lacher
Lache is an extremely rare name with multiple potential origins. It may function as a phonetic variant of Lake, referring to a body of water, or derive from the Germanic surname Lacher, which historically referred to someone living near a pond or swampy area. In some contexts, it is also viewed as a modern creative coinage.
Less common today
Lache isn't in the latest US Top 1000. It last peaked at #6,800 in 1990.
US births per 5-year period, 1990βpresent (SSA data).