Wiktionary
familyless
a. Without a family.
Usage examples of "familyless".
Only the very poor, the familyless, the mendicants who filled the roads of Italy.
He needs her to give him a legitimate heir, and that heir can't be a lovable but familyless Blade!
Landless, Houseless, Familyless Sangaree simply were not disciplined enough to make war in human terms.