During Simcoe's time in Toronto, two main roads were laid out in the city: Dundas Street, named after Sir Henry Dundas and Yonge Street, named after Sir George Yonge, the British Secretary of State for War. The Queen's Rangers and conscripted German settlers hacked out the wagon path of Yonge Street as far north as the Holland River. Government buildings were erected near Parliament and Front Street. Simcoe had hoped to found a university in York during his time but was successful in establishing law courts in York. Labour was in short supply, and slaves were still allowed at this time, but Simcoe arranged for the gradual abolition of slavery, passing legislation banning any further slaves, and the children of slaves would be freed when they reached their 25th birthday. Due to ill health, Simcoe returned to England in July 1796 on leave but did not return and he gave up his position in 1799. By this time, York was estimated to have a population of 240 persons.