Get latest post by author

Hey guys, I’m having a little trouble here.

I’m trying to display 1 latest post of a specific author and I can’t seem to figure it out.

I’m really close too. here’s what I got.

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<?php if (the_author() == “First Lastname” ) : echo the_title(); else : echo “gay”; endif; endwhile; endif; ?>

It outputs the title, but also other authors in that loop. What’s going on?