um ▁v et us ▁Gall ica ▁— ▁that ▁included ▁the ▁" Q / A " ▁version ▁of ▁the ▁Lib ell us , ▁and ▁it ▁is ▁also ▁possible ▁that ▁he ▁knew ▁of ▁the ▁Collect io ▁Bob i ensis , ▁with ▁its ▁app ended ▁" Cap it ula " ▁version ▁of ▁the ▁Lib ell us . ▁A ▁third ▁version ▁of ▁the ▁Lib ell us ▁known ▁as ▁the ▁" Let ter " ▁version ▁may ▁also ▁have ▁been ▁known ▁to ▁Bon if ace . ▁There ▁are ▁slight ▁differences ▁in ▁word ing ▁and ▁chapter ▁order ▁between ▁the ▁three ▁versions , ▁but ▁for ▁the ▁most ▁part ▁they ▁are ▁the ▁same , ▁with ▁one ▁important ▁exception : ▁the ▁" Q / A " ▁and ▁" Cap it ula " ▁versions ▁contain ▁a ▁passage ▁that ▁discuss es ▁how ▁closely ▁a ▁man ▁and ▁a ▁woman ▁can ▁be ▁related ▁before ▁they ▁are ▁prohib ited ▁from ▁being ▁married ; ▁the ▁" Let ter " ▁version ▁om its ▁this ▁passage . ▁According ▁to ▁Karl ▁U bl ▁and ▁Michael ▁D . ▁Elli ot , ▁the ▁passage ▁in ▁the ▁" Q / A " ▁and ▁" Cap it ula " ▁versions ▁is ▁authentic , ▁and ▁its ▁absence ▁from ▁the ▁" Let ter " ▁version ▁represents ▁a ▁later ▁modification ▁of ▁the ▁text ▁probably ▁made ▁in ▁the ▁mid - se vent h ▁century . ▁The ▁passage ▁in ▁the ▁" Q / A " ▁and ▁" Cap it ula " ▁versions ▁has ▁Gregory ▁saying ▁that ▁those ▁related ▁within ▁the ▁second ▁degree ▁of ▁kin ship ▁( including ▁sib lings , ▁parents