Ísleifs þáttr biskups (The Tale of Bishop Ísleifr) is a short Old Norse-Icelandic narrative which recounts two episodes from the life of Ísleifr Gizurason, the first bishop of Iceland.
The first episode recounts Ísleifr's meeting with St Ólafr in Norway.
The second part of the narrative gives an account of Ísleifr's marriage to Dalla Þorvaldsdóttir.
[1] The þáttr is preserved in Flateyjarbók, where it is interpolated in Óláfs saga helga, in AM 753 fol.
5, a now-fragmentary 15th-century vellum manuscript, and AM 554h α 4to., a 17th-century paper copy of AM 753 fol.