Pedzisa mutsara unotevera: Muna September 1259, William weVillehardouin akakundwa ndokutorwa, pamwe chete navakuru vake vazhinji, muHondo yePelagonia, namauto amambo weNicaea Michael VIII Palaiologos. Makore maviri gare gare, vaNicaea vakakundazve Constantinople, vachigumisa Umambo hweLatin uye kudzorera Umambo hweByzantium. Panguva iyi, mambo akaita chibvumirano nomuchinda akanga akabatwa: William nevarume vake vaizosunungurwa mukutsinhana nokuita mhiko yokuvimbika, uye kubvisa Monemvasia, Grand Magne, uye Mystras. Kugamuchirwa kwacho kwakaitwa muna 1262, uye kubvira ipapo Mystras yakanga yava chigaro chomubati wenharaunda dzeByzantium muMorea. Pakutanga gavhuna uyu ("kephale") aichinjwa gore roga roga, asi pashure pa1308 vakatanga kugadzwa kwenguva yakareba. Anenge pakarepo paakadzokera kuMorea, William weVillehardouin akaramba mhiko yake kuna mambo, uye hondo yakatanga pakati pevaByzantine nevaFrank. Kuedza kwokutanga kweByzantium kukurira Humambo hweAchaea kwakadzoserwa muhondo dzePrinitsa ne
Makryplagi, asi vaByzantine vakanga vakadzika midzi zvakasimba muLaconia. Hondo yakava yenguva dzose, uye vaByzantium vakadzinga vaFrank zvishoma nezvishoma. Kusachengeteka kwakakonzerwa nekurwiswa uye kurwiswa kwakakonzera vagari veLacedaemon kusiya guta ravo rakavhurika ndokugara paMystras, mutaundi idzva rakavakwa mumumvuri wenhare.