Likely a surname-style modern name influenced by Landry, from Germanic roots meaning ruler or power.
Landrey is a variant form of Landry, a name with Germanic origins reaching back to the early medieval Frankish name Landric, composed of the elements land (land, territory) and ric (power, rule) — giving it the essential meaning of "ruler of the land" or "powerful in the territory." The Franks, who unified much of western Europe under Charlemagne in the 8th and 9th centuries, spread names built on the land- prefix across France, England, and the Low Countries, and Landry became well established in the French-speaking world by the high medieval period. The name's most notable historical bearer is Saint Landry of Paris (died c.
661), the Bishop of Paris who founded the Hôtel-Dieu de Paris — the world's oldest continuously operating hospital, still functioning today on the Île de la Cité near Notre-Dame. This act of civic charity gave the name an enduring association with healing and compassionate governance in the French Catholic tradition. In Louisiana, Landry became a major Cajun surname carried by Acadian settlers expelled from Nova Scotia in the 1750s, which is why the name retains particular warmth and recognition in the American Deep South.
The Landrey spelling modernizes the traditional Landry, softening its French surname quality into something that reads more comfortably as a given name in contemporary English-speaking contexts. In practice it occupies a pleasing middle ground: old enough to have genuine historical depth, uncommon enough to feel distinctive, and grounded enough in both European and American Southern tradition to carry a sense of place and heritage.