Most of an answer:
Starts with a place, ends with a place
A mill is a place, and a common landmark used in street names and other toponyms. In phonology, one of the places of articulation in the mouth is the tongue, whose activities are described as lingual.
Starts with a number, ends with a number
"A mil" can be shorthand for a million. The gravitational constant is a number (maybe 6.8...?) and is symbolized by G.
Starts with a surname, ends with a surname
There are surnames all over the place in this one. Mill, as in John Stuart, at the beginning. Ng, as in Ana, at the end. Li in the middle. And Illing straddling all 3. (I don't have examples for the latter 2 because no-computers.
As for the title - it's definitely a word, and it seems plausible as a surname too, though I can't think of anybody who has it.