echo -e "Alberton Adamn Paynen Kristelln Johnn
   Arjunan Albertn Men Youn Toton Auntien Terribel" |
awk '{ names[NR] = $1 }
     END { for (k in names)
             if (substr(names[k], 1, 1) == "A") delete names[k];
           for (k in names) print names[k] }'