Well-born or noble
A modern spelling variation of Gentry, which originated as an English occupational surname referring to people of high social standing or 'noble birth'. It is derived from the Old French word 'genterie', denoting the class of well-born people just below the nobility.
Less common today
Gentrie isn't in the latest US Top 1000. It last peaked at #11,825 in 2019.
US births per 5-year period, 1990βpresent (SSA data).