▁other ▁exped itions ▁to ▁the ▁Rio ▁d ' O uro ▁and ▁other ▁parts ▁of ▁West ▁Africa ▁in ▁the ▁service ▁of ▁Prince ▁Henry . ▁He ▁was ▁personally ▁known ▁to ▁G om es ▁E annes ▁de ▁Az ur ara , ▁the ▁historian ▁of ▁this ▁early ▁period ▁of ▁Portuguese ▁expansion ; ▁and ▁from ▁Az ur ara ' s ▁language ▁it ▁is ▁clear ▁that ▁Fern and es ' ▁revel ation ▁of ▁unknown ▁lands ▁and ▁races ▁was ▁fully ▁appreciated ▁at ▁home . ▁ ▁References ▁ ▁Category : Port ug uese ▁expl or ers ▁Category : 1 5 th - century ▁expl or ers ▁of ▁Africa ▁Category : 1 5 th - century ▁Portuguese ▁people ▁Category : Mar itime ▁history ▁of ▁Portugal <0x0A> </s> ▁Otto ▁III ▁( 1 1 ▁February ▁ 1 2 6 1 ▁– ▁ 9 ▁November ▁ 1 3 1 2 ), ▁a ▁member ▁of ▁the ▁W itt els bach ▁dynast y , ▁was ▁the ▁Duke ▁of ▁Lower ▁Bav aria ▁from ▁ 1 2 9 0 ▁to ▁ 1 3 1 2 ▁and ▁the ▁King ▁of ▁Hung ary ▁and ▁Cro atia ▁between ▁ 1 3 0 5 ▁and ▁ 1 3 0 7 . ▁His ▁reign ▁in ▁Hung ary ▁was ▁disput ed ▁by ▁Charles ▁Robert ▁of ▁the ▁An ge vin ▁dynast y . ▁ ▁Family ▁Otto ▁was ▁born ▁in ▁Burg hausen , ▁the ▁son ▁of ▁Henry ▁XIII , ▁Duke ▁of ▁Bav aria , ▁and ▁Elizabeth ▁of ▁Hung ary . ▁ ▁Biography ▁Otto ▁succeeded ▁his ▁father ▁in ▁ 1 2 9 0 ▁as ▁du ke ▁of ▁Lower