[15] Stíflusunds ‘of Stíflusund’: The p. n. has not survived (ÍF 26). The association of Stíflusund with Geirstaðir (on Geirstaðir see Note to st. 26/14) in the Þáttr af Upplendinga konungum (Hb 1892-6, 457) is more likely the result of speculative Icelandic historiography than of any particular geographical knowledge.