Julie, I don't know which style guide your writing environment follows, but the general publishing standard, as expressed by _The Chicago Manual of Style_, for the possessive form would be _Titus's_. (_Chicago_ 16, par. 7.16) The alternate form (the apostrophe only, omitting the _s_ that follows) was typically applied to those cases of proper names of two syllables or more ending in an _eez_ sound, or of words and names ending in an unpronounced _s_. That's my understanding. This guideline is spelled out in _Chicago_ 15, pars. 7.20 and 7.21, and abandoned in _Chicago_ 16_, pars. 7.17 and 7.18. The MLA handbook would seem to agree. In the 7th ed, at 3.2.7e, the guideline to add the apostrophe and an _s_ to any singular proper noun appears, with these examples -- Venus's beauty Dickens's reputation As for the plural form, I would think it would be _Tituses_. Odile >What is the correct spelling of the plural and possessive forms of >the proper name Titus? > >Tituses? Titus'? Titus's? Some handbooks favor the apostrophe >here; others prefer the apostrophe and s. > >Many thanks for your help! > >Julie Suarez Hayes >To join or leave this LISTSERV list, please visit the list's web >interface at: http://listserv.muohio.edu/archives/ateg.html and >select "Join or leave the list" > >Visit ATEG's web site at http://ateg.org/ To join or leave this LISTSERV list, please visit the list's web interface at: http://listserv.muohio.edu/archives/ateg.html and select "Join or leave the list" Visit ATEG's web site at http://ateg.org/