▁for ▁Me asure , ▁John ▁Mil ton ' s ▁Ly c idas , ▁Samuel ▁Rog ers ' s ▁Capt ivity , ▁and ▁John ▁Ke ats ' s ▁Isabel la , ▁S leep ▁and ▁Po etry , ▁and ▁The ▁E ve ▁of ▁St . ▁Ag nes . ▁However , ▁there ▁is ▁little ▁evidence ▁to ▁suggest ▁that ▁Ke ats , ▁though ▁well ▁respect ed ▁by ▁T enn ys on , ▁influenced ▁the ▁poem ▁although ▁Ke ats ' s ▁Isabel la ▁is ▁lingu ist ically ▁similar ▁to ▁" Mar iana " ▁and ▁could ▁serve ▁as ▁a ▁parallel . ▁If ▁Isabel la ▁is ▁parallel ▁to ▁" Mar iana " ▁in ▁terms ▁of ▁dealing ▁with ▁women ▁who ▁have ▁lost ▁their ▁lo vers , ▁so ▁too ▁could ▁Vir g il ' s ▁A ene id ▁be ▁described ▁as ▁a ▁parallel ▁to ▁the ▁poem . ▁ ▁There ▁is ▁no ▁evidence ▁to ▁suggest ▁that ▁Cin na ' s ▁po ems ▁influenced ▁T enn ys on ▁since ▁T enn ys on ▁admitted ▁to ▁not ▁having ▁read ▁Cin na . ▁Th emat ically , ▁" Mar iana " ▁is ▁different ▁from ▁the ▁writing ▁of ▁Hor ace ▁although ▁T enn ys on ▁does ▁rely ▁on ▁a ▁lyr ical ▁style ▁similar ▁to ▁both ▁Cin na ▁and ▁Hor ace . ▁A ▁relationship ▁with ▁the ▁poetry ▁of ▁S app ho ▁is ▁more ▁likely ▁than ▁to ▁Cin na , ▁as ▁there ▁is ▁a ▁sexual ▁element ▁to ▁S app ho ' s ▁poem ▁as ▁well ▁as ▁T enn ys on ▁favour ing ▁S app ho ▁as ▁a ▁poet .