What may be confusing you is that, in parts of New Brunswick, the surname, Roi-Roy, was 'translated' in to the English form, King. For example, Charly Roy m. Maine 7JUN1913 Eva Dionne. She was from Calano, ME and he was from Connor, ME.
Acadia meant New Brunswick and Nova Scotia (mostly.) Here New Brunswick is likely meant. If Charles Roy/King was married in 1913 the he was likely born ca. 1888 give or take. Knowing at least a close approximation of his birth-date certainly would be useful. There are just to many possibilities. For example, in NB in 1891 there were:
Surname Given Name Age Province District Name Sub-District Name 1. King Charles 14 New Brunswick Northumberland North Esk 2. King Charles 38 New Brunswick York Fredericton St Ann Ward 3. King Charles 17 New Brunswick Northumberland Chatham 4. King Charles 42 New Brunswick Saint John City Sydney Ward 5. King Charles 71 New Brunswick York Douglas 6. King Charles 15 New Brunswick Westmorland Salisbury 7. King Charles E 29 New Brunswick Charlotte Grand Manan 8. King Charles E 7 New Brunswick York Kingsclear
1. Roy Charles 48 New Brunswick Gloucester Beresford 2. Roy Charles 36 New Brunswick Gloucester Beresford 3. Roy Charles L 11 New Brunswick Charlotte Milltown 4. Roy Charlotte 53 New Brunswick Gloucester Caraquet
1. Roi Charles 4 New Brunswick Gloucester Beresford
Charles E. King age 7 in Kingsclear Parish, York Co., NB seems a possibility (as that was one area that Roi-Roy was changed to King) but how to tell? Charles E. King, b. ca. 1884, was the son of Benjamin (ca. 1849) and Mary (ca. 1861) King. I suspect they were of French origins as the were Roman Catholic and Mary was b. in Quebec. I do not see them in 1901 and 1911 and they could easily have moved to Maine. In 1881 Benjamin (ca. 1848) was indicated as French. He was the s/o Joseph (ca. 1818) and Elizabeth (ca. 1823) King. In 1871 Benjamin was b. ca. 1851. The family is listed twice, and in the second entry he was b. ca. 1850.
A son of Benjamin and Mary in 1891 was Joseph B. King (ca. 1886.) Also with them were a widow, Mary Goodine (ca. 1826) and Mary D. Goodine (adopted, ca. 1881.) Next door lived Joseph (ca. 1818) and Elizabeth (ca. 1826) King with Joseph Goodine (ca. 1875, adopted.) Perhaps Mary Goodine was Benjamin's mother-in-law. At: http://archiver.rootsweb.ancestry.com/th/read/KING/2000-02/0950071885http://archiver.rootsweb.ancestry.com/th/read/KING/2000-02/0950071885 however, Mary's maiden name is Thomas.