No. JFK. Bobby Hebb wrote it in 1963 after his brother was killed in a knife attack the day after JFK was assassinated in memory of both of them. Obviously JFK is the John in Abraham, Martin and John. (Bobby Kennedy gets a mention at the end of Abraham, Martin and John though his name isn’t in the title). He had a very interesting life did Bobby Hebb. Talented bloke.
Difficult for me to get a definitive answer to the O/P's question, as when I was born there were no "standard" charts, both in the US and UK until 1953/54, quite a few years after the heralded event . Prior to the advent of "global" charts ( bit like the "World Series of Baseball" definition the Yanks glorified as sacrosanct - "The Billboard Hot 100" or the UK equivalent "NME weekly charts". Best I can figure out, the appropriate song was as follows:
Thought I’d look up the one at no 1 when my wife was born. It was I Believe by Frankie Laine, still the record which has spent most weeks at no 1. This is my favourite version of it. I could listen to Mahalia Jackson singing anything.
Lying git, it was God Save the King, and one of the Edward's at that! The views expressed in my posts are not necessarily mine.
Can’t beat Mahalia Jackson in my view. I’m not religious but can listen to her singing gospel all day long.