As a proper noun ing
is shortened from inga, rare by itself but a popular first part of twentieth century hyphenated names like ing-britt and ing-marie.
Other Comparisons: What's the difference?
From (etyl) .
* OED 2nd edition 1989
: From Pitman em'' and ''en , which it is related to phonetically and graphically, and the sound it represents. The change in vowel probably reflects the familiar suffix -ing.
The name of the letter for the ng sound in Pitman shorthand.
* x-ing, Xing, X-ing
Primarily used on road signs – see (road crossing). Compare with crossbuck symbol.