He served as scorer for the New South Wales cricket team at various times over a period of around 40 years.
Jackschon was born in Maust, in Teichland north of Cottbus, Spree-Neiße, Prussia (now in eastern Germany).
He emigrated to Australia with his parents and two older sisters, arriving in Sydney in August 1852 on the brig Reiherstieg.
A report in The Referee of the Jubilee match played between New South Wales and Victoria in 1906 mentioned that Jackschon had compiled a table of balls faced and runs scored by each batsman off each bowler, in a similar manner to the modern linear system of scoring used in the 1890s by John Atkinson Pendlington, and developed Bill Ferguson and Bill Frindall.
Affectionately nicknamed "the Professor" and occasionally "Jacko", "General" or "Daddy", he regularly occupied a seat in "Veterans Corner" in the Sydney Cricket Ground's pavilion, near the visitors dressing room, attending cricket or rugby matches for around 30 years.