bröþrungi (OSw) bræðrungr (ON) brǿðrungar (pl.) (ON) brǿðrungr (ON) bröllungi (OSw) bryllungi (OSw) noun

A brǿðrungr is specified as ‘first male cousin’ in Grg (Bat 113), but it is defined variously in dictionaries as a son of a paternal uncle or any child of a paternal uncle (male/female cousin) or agnate cousin, as well as a female second cousin (the paternal grandfathers being brothers). The term is also used more generally to designate a male agnate cousin, i.e. male children of siblings on the paternal side. F also notes that brǿðrungr is sometimes used to mean a paternal uncle’s daughters instead of bræðrung or bræðrunga. This and other kinship notations in the Nordic laws are often misleading to modern interpreters, as they do not necessarily refer to ego.

brothers’ daughters OSw ÄVgL Gb
OSw YVgL Urb
brothers’ sons OSw ÄVgL Gb
OSw YVgL Urb, Gb
cousin on the father’s side OSw KrL Äb
OSw MEL Äb
OSw MESt Äb
daughter of father’s brother OSw YVgL Urb
first cousin OIce Grg Bat 113
ONorw FrL KrbB 1, 8
male first cousin ONorw GuL Mhb, Sab
ONorw MLL Kdb 5
nephew OSw DL Mb, Gb
offspring from a brother OSw ÖgL Äb
paternal cousin OSw SdmL Äb
OSw UL Äb, Jb
son of a paternal uncle OIce Grg Feþ 162
sons of father’s brothers OSw YVgL Add
Expressions:

bræðrungar eða systrungar (ON)

daughters of brothers or sisters OIce Grg Feþ 162

first cousin (on father's & mother's side) OIce KRA 20, 37

Refs:

CV s.v. bræðrungr; F s.v. bræðrungr; Vestergaard 1988; Z s.v. bræðrungr