Conversation so far:
where was Walter Scott born?
in Dryburgh Abbey.
when was he born?
Walter Scott was born on 15 August 1771.
who were his parents?
He was the ninth child of Walter Scott, a Writer to the Signet (solicitor), and Anne Rutherford.
where did he go to school?
In October 1779 he began at the Royal High School of Edinburgh (in High School Yards.
did he go to college?
After finishing school he was sent to stay for six months with his aunt Jenny in Kelso, attending the local grammar school.
what did he do after school?
who later became his business partners and printed his books.
who?
John Ballantyne.

Question: what did they do together?
Self-contained rewrite: What did Walter Scott and John Ballantyne do together?