Complex sentence: April 18 th 1188, Sicardo, bishop of Cremona, laying the first stone of a new castle to defense of Cremona, an outpost toward Crema, the Castrum Leonis, today Castelleone (CR).
Split into simpler sentences: April 18 th 1188, Sicardo, as bishop of Cremona, laid the first stone of a new castle to defend Cremona. This was an outpost toward Crema, the Castrum Leonis, today Castelleone (CR).