"Sagacity" refers to the ability of a person to make sound judgement. It is similar to wisdom. In this case, it refers to the self-reliance of Yorkshire men.
"To bestow" is to present something as a gift. It is often used as a synonym of "to confer" (an honor, an award). The word here refers to reluctance of Yorkshire men to offer assistance to others.
This info came from down below, also sorry this is years late.
