Johanna's title not derived through him, [111], [112];
his nameless dau. probably wife of earl Magnus II, [112];
reasons why Johanna was not his dau., [112];
probably named after king John of England, [113];
his legal successor, his nameless dau., [115], [116], [117];
sole earl of O., [118];
his sister's son, Jon Langlifson, in 1263, [123];
succeeded in earldom of Orkney by Magnus II, [123];
his castle at Brawl, [133];
joint earl with David, [152] (n. 1);