I've never heard of Carlock Park. A location would help. Is it in Bergen County?
With next-to-no information, I found two possibilities from 1977. If I had to make a desperate guess, I'd say his first name is William and the park might be in Fairview, NJ.
From a "carlock park nj" search:
3-2-77 Asbury Park Press (you will have to join for a free trial just to see the page............I didn't): https://www.newspapers.com/newspage/145692153/
(see below Google search result which mentions Bergen County and William Carlock Park)
From a "carlock park bergen" search:
8-5-77 The Daily Register, Shrewsbury, NJ: http://220.127.116.11/DATA/RBR/1970-1979/1977/1977.08.05.pdf
(a long pdf you'll have to wade through.............I didn't do that either, but the Google search result below mentions Fairview and English Neighborhood, of which Ridgefield and Fairview were part. That was actually a mention of English Neighborhood Park in Fairview, so maybe they're related or even the same park. You'll have to check with Fairview for any more Carlock Park info.
One last thing: I just found a "Carlock Field" in Rochelle Park, NJ, but no mention of its naming history. For that, check with Rochelle Park.
Good luck - let us know what you discover.