Otto (1278 – October 29, 1310) was
Count of Cleves from 1305 through 1310.
Otto was the eldest son of
Dietrich VII, Count of Cleves (1256–1305) and his first wife Margaret of Guelders.
His first marriage was to Adelheid van der Marck, daughter of
Engelbert I, Count of the Mark.
Later he married Mechteld von Virneburg, a niece of
Heinrich II of Virneburg. They had one daughter
Irmgard of Cleves, who married
Adolph II of the Marck and later
John IV of Arkel.
When he died, at
Horstmar, in 1310 he was succeeded by his half-brother
Dietrich VIII.
References
{{Authority control
Counts of Cleves
1310 deaths