The word Heires is misspelled against Heiress, a noun meaning "A female heir."
-->
Heiress has double 'ss' in the end mispronounced as 's'
Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  heire-s 
Correct Spelling:  heire-ss 
Find more wrongly spelled words of Heiress to spell it well.