Hrelja
... that Hrelja, a 14th-century semi-independent feudal lord under Serbian suzerainty, built the defensive tower in Bulgaria's largest monastery, the Rila Monastery?
... that <b id="mwFBA"><a href="./Hrelja" id="mwFBE" rel="mw:WikiLink" title="Hrelja">Hrelja</a></b>, a 14th-century semi-independent feudal lord under <a href="./Serbia" id="mwFBI" rel="mw:WikiLink" title="Serbia">Serbian</a> suzerainty, built the defensive tower <i id="mwFBM">(pictured)</i> in <a href="./Bulgaria" id="mwFBQ" rel="mw:WikiLink" title="Bulgaria">Bulgaria</a>'s largest monastery, the <a href="./Rila_Monastery" id="mwFBU" rel="mw:WikiLink" title="Rila Monastery">Rila Monastery</a>?