Marlin

Derived primarily as an English surname tied to geographical marl pits or as an anglicized variation of the Welsh Merlin. American parents adopted it across the late nineteenth century as a soft-edged alternative to traditional biblical names. It settled into regular rural and small-town use without ever mounting a serious national surge.

The name suggests someone who knows the exact water pressure in every room of the house. For decades it carried the quiet authority of midcentury nature documentaries before twentieth-century animation shifted the reference point to an anxious reef dweller. Today it sounds like an uncle who owns three identical canvas jackets and fishes only on Tuesdays.