Flynn family

The Flynn family is a what appears to be a possibly Irish-American family (since all have red hair) that is featured in the show. It's first known member is the spirited Clyde Flynn.

Family Tree
Clyde Flynn + Betty Jo Flynn | (see Fletcher Family}                       |                        |                   Unnamed--+--Lawrence Fletcher--+--Linda Flynn--+--Unnamed   Unnamed--+--Unnamed                                            |                         |                                          |         |                         |                                          |          |                         |                      Ferb Fletcher      Candace Flynn  Phineas Flynn                   Bartie Flynn