Valentina comes from the Latin valens, meaning strong or healthy, and the name is traditionally associated with vigor and robust vitality rather than delicacy. It's often read as suggesting resilience of body and spirit together -- strength understood as a kind of wellbeing, not merely physical force applied outward.
The vertue of a Planet is in that House, whose beginning or cusp a Planet precedes by no greater space than five degrees. - William Lilly (1602.-1681.)