Possible Clues:

• Native garb I found within a radius, for example
• Earliest resident with roots in Lincoln
• Old Australian with roots in Lincoln
• Native in land before arrival of colonists
• Inhabitant of country before colonists
• It's not native for a bore with one drink in him
• Original inhabitant
• Inhabitant of country before the arrival of colonists
• Earliest inhabitant of, say, Australia
• Earliest known inhabitant