Lucius Verus
Libo was a Patrician and came from Hispania Baetica. His grandfather was Marcus Annius Libo, who was made suffect consul in 161. His father of the same name was a "legatus" of Syria and may have been poisoned, possibly by his cousin, Lucius Verus. Libo was related to Lucius Verus through their mutual ancestor, Marcus Annius Verus, who was consul three times, and by marriage to Emperor Antoninus Pius, who married his grandfather's sister.