There may have been other such cases which have not yet been re-discovered.
Further information is welcomed by the author (nfm24(AT)cantab.net) - any potential additional cases should preferably be evidenced.
Player Relation Birth date Matches Arthur Reynold 'Kelly' Foster Father 14-Dec-1890 1 to 6 inclusive Arthur Colin Foster Son 25-Nov-1910 1 to 6 inclusive Lindsay Reynold (Reyn) Foster Son 26-Oct-1912 6 only # Date Venue Match 1 12-Feb-1931 Bridgetown Barbados 2-1 Martinique 2 13-Feb-1931 Bridgetown Barbados 3-2 Martinique 3 16-Mar-1931 Georgetown Trinidad 5-1 Barbados 4 20-Mar-1931 Georgetown British Guiana 7-0 Barbados 5 26-Oct-1933 Port of Spain British Guiana 2-0 Barbados 6 6-Nov-1933 Port of Spain Trinidad 6-0 Barbados Note: in matches 5 and 6, 'Kelly' Foster's two nephews Seymour & Leon Foster were also in the Barbados lineup.
Standing (L to R): H.C. Weekes (Spartan), Reyn Foster (Rovers), R. Blackman (Spartan), H.L. Thomas (Rovers), C.B. Stuart (Spartan), Colin Foster (Rovers), A. Barrow, H. Horton (referee), K.McIntosh (St Ambrose), H.McD. Forde (Harrison College). Sitting (L to R): J.L. Parris (Spartan), J.E.D. Sealy (Spartan), Seymour Foster (vice-captain, Rovers), Arthur 'Kelly' Foster (captain, Rovers), J.C.V. Bellamy (player-manager, Wanderers), Leon Foster (Rovers), R. Mayers (Rovers), L.A. Smith (Rovers). Not in picture: G.A. Ashby (Spartan) Notes: 'Kelly' Foster was also the Secretary and later the President of the Barbados A.F.A. He administrated several other sports in Barbados, especially boxing, athletics, and water polo, and he was awarded the M.B.E. in 1951 for his services to sport. In addition to the those named in the 1933 team, two more of his sons (Mike Foster and John Foster) and another nephew (Lisle Foster) played for Barbados later during the 1930s and 1940s.
Player Relation Birth date
Arnór Guðjohnsen Father 30-Apr-1961
Eiður Smári Guðjohnsen Son 15-Sep-1978
Date Venue Match
24-Apr-1996 Tallinn Estonia 0-3 Iceland
Note: strictly speaking, the two men did not play together on the field, but they did both participate
in the same match; Eiður entered the field as a substitute for his father Arnór after 62 minutes.
It was planned that they would play together in Iceland's next home match, but unfortunately Eiður sustained
an injury which ruled him out for several months. By the time he was fit again, his father had retired.

Left: warmup before the match.
Right: the moment when Arnór leaves the field to be substituted by his son Eiður.
Player Relation Birth date
Dr Irma L.M. Halaby Mother 1960s
Melissa R. Halaby Daughter 22-Jul-1990
Date Venue Match
1-Apr-2007 Dededo Guam 7-0 Northern Mariana Islands
Note: another daughter (Rima Halaby) was a member of the N.M.I. national team in 2008.

Before the match in 2007 (Guam in blue shirts, N.M.I. in white shirts).
Player Relation Birth date
Sandra Fruean Herrera Mother 23-Aug-1968
Ivette Herrera Daughter 20-Sep-1988
Date Venue Match
25-Aug-2007 Apia Papua New Guinea 6-0 American Samoa
28-Aug-2007 Apia Cook Islands 1-1 American Samoa
1-Sep-2007 Apia Solomon Islands 3-0 American Samoa

The American Samoa team celebrating their first point after the match against the Cook Islands.
Player Relation Birth date
Bára Skaale Klakstein Mother 24-Mar-1973
Eyðvør Klakstein Daughter 5-Sep-1995
Date Venue Match
28-Nov-2012 Niederkorn Luxembourg 0-6 Faroe Islands
4-Apr-2013 Vilnius Montenegro 3-3 Faroe Islands
6-Apr-2013 Vilnius Lithuania 0-1 Faroe Islands
9-Apr-2013 Vilnius Georgia 1-2 Faroe Islands

Left: before the match vs Luxembourg (18 Eyðvør Klakstein, 17 Bára Skaale Klakstein).
Right: The Faroe Islands team celebrating after their win vs Georgia. For the first time the team had qualified for the next round of the World Cup preliminaries.
Upper row (L to R): 18 Laila Pætursdóttir, 1 Nina Davidsen, 7 Rakul M. Johannesen, 13 Íðunn Magnussen, 2 Maria K. Thomsen, 15 Doris í Garði Olafsdóttir,
11 Ansy Sevdal, 12 Liljan av Fløtum Petersen, 14 Oddrún Danielsen, 16 Randi S. Wardum, 17 Olga Kristina Hansen
Lower row (L to R): 9 Rannvá B. Andreasen, 4 Lív Arge, 5 Bára Skaale Klakstein, 8 Malena Josephsen, 10 Heidi Sevdal, 6 Eyðvør Klakstein, 3 Fríðrún Danielsen.
Thanks to FSF, Denis Foster, Wesley Bogdan and Jeff 'Ziggy' Korytoski.
Prepared and maintained by Neil Morrison for the Rec.Sport.Soccer Statistics Foundation
Author: Neil Morrison (nfm24(at)cantab.net)
Last updated: 26 Feb 2015
(C) Copyright Neil Morrison and RSSSF 2014/15
You are free to copy this document in whole or part provided that proper
acknowledgement is given to the authors. All rights reserved.