[5] He was elected a fellow of Trinity and then appointed to the chair of mathematics at the University of Liverpool at the age of 24.

Boys was granted a divorce on the grounds of Marion's adultery with Forsyth.

[8] Forsyth became professor at the Imperial College of Science in 1913 and retired in 1923, remaining mathematically active into his seventies.

[3] He died in London on 2 June 1942 and was cremated at Golders Green Crematorium.

[4] Forsyth received the degree of Doctor mathematicae (honoris causa) from the Royal Frederick University on 6 September 1902, when they celebrated the centennial of the birth of mathematician Niels Henrik Abel.