when was the first time he got arrested?
1838
The boy Jones
In 1838, aged approximately 14, Jones entered Buckingham Palace disguised as a chimney sweep. He was caught by a porter in the Marble Hall and, after a chase, captured by the police in St James's Street, with Queen Victoria's underwear stuffed down his trousers. 
what is the name of the queens palace Buckingham-palace describe a few instances of security breaches? The boy Jones was an intruder who gained entry on three occasions between 1838 and 1841 who is he? A British teenager who became notorious for breaking into Buckingham Palace multiple times how many times did do it? Three times
wiki:8740782
The boy Jones [SEP] Arrests
In 1838, aged approximately 14, Jones entered Buckingham Palace disguised as a chimney sweep. He was caught by a porter in the Marble Hall and, after a chase, captured by the police in St James's Street, with Queen Victoria's underwear stuffed down his trousers. He was brought before Queen Square Police Court on 14 December. It turned out that he had frequently mentioned his intention to enter the palace to his employer, a builder. Although he had apparently stolen linen and a regimental sword from the palace, he was acquitted by the jury. On 30 November 1840, nine days after the birth of Queen Victoria's first child, Princess Victoria, he "scaled the wall of Buckingham Palace about half-way up Constitution Hill", entered the palace, and left undetected.