▁and ▁" The ▁Sar antine ▁M osa ic " ▁in ▁An cient ▁Greece . ▁David ▁Gem mel ▁has ▁only ▁two ▁historical ▁fant asy ▁series . ▁The ▁first ▁is ▁the ▁Greek ▁series , ▁which ▁are ▁about ▁Par men ion , ▁a ▁general ▁of ▁Alexander ▁the ▁Great . ▁The ▁story ▁is ▁lo os ely ▁based ▁on ▁historic ▁events , ▁but ▁adds ▁fant asy ▁elements ▁such ▁as ▁super natural ▁cre atures ▁and ▁sor c ery . ▁His ▁post hum ous ▁T roy ▁Series ▁features ▁a ▁fict ional ▁version ▁of ▁the ▁Tro jan ▁War . ▁The ▁Seven w aters ▁Tr il ogy ▁( l ater ▁expanded ) ▁ ▁by ▁Jul iet ▁Mar ill ier ▁is ▁set ▁in ▁ 9 th - century ▁Ireland . ▁ ▁Children ' s ▁historical ▁fiction ▁ ▁A ▁prominent ▁sub gen re ▁within ▁historical ▁fiction ▁is ▁the ▁children ' s ▁historical ▁novel . ▁O ften ▁following ▁a ▁ped agog ical ▁bent , ▁children ' s ▁historical ▁fiction ▁may ▁follow ▁the ▁convent ions ▁of ▁many ▁of ▁the ▁other ▁sub gen res ▁of ▁historical ▁fiction . ▁A ▁number ▁of ▁such ▁works ▁include ▁elements ▁of ▁historical ▁fant asy ▁or ▁time ▁travel ▁to ▁facil itate ▁the ▁transition ▁between ▁the ▁contemporary ▁world ▁and ▁the ▁past ▁in ▁the ▁tradition ▁of ▁children ' s ▁portal ▁fiction . ▁ ▁Sometimes ▁publish ers ▁will ▁commission ▁series ▁of ▁historical ▁nov els ▁that ▁explore ▁different ▁periods ▁and ▁times . ▁Among ▁the ▁most ▁popular ▁contemporary ▁series ▁include ▁the ▁American ▁Girl ▁nov els ▁and ▁the ▁Magic ▁Tree ▁House ▁series . ▁A ▁prominent ▁award ▁within ▁children '