Interesting.When I read your message, I recalled coming across a variation of the League spelling, very similar to Leogue, but was it was spelled "Loague."Here is what I copied from the Philadelphia City Directories:
1794 - Robert Loague, House Carpenter, 12 Shippen St., Southwark Thomas Loague, 21 Pewter Platter Alley Loague and Work, House Carpenters, 2 Shippen St.
1796 - Robert Loague, House Carpenter, between 12 and 20 Shippen St., Thomas Logue, Foldier, Between 19 and 25, Pewter Platter Alley
1797 - Robert Loague, House Carpenter, 14 Shippen St. Thomas Logue, Foldier, Pewter Platter
In the 1800 Pennsylvania census, Robert's last name is spelled "Leag."Other notes that I have indicate there was also a John League in that vicinity about 1810.
Also I have a record for a Moses League, born in Maryland, about 1780.
Let me know if any of this appears to fit with those you are tracing.