Genealogy terms Articles in the "Genealogy terms" category B Brick wallsD DescendantsE Emancipation Endogamy EnumerationF Family relationships explained Family traditions Family tree First cousin once removed First cousin twice removedG Genealogy Gretna Green marriages Guide to abbreviations and key genealogy termsH Half relationships and full relationships Half-siblingsI Intergenerational relationshipsM Manumission Matrilineal Matronymic Most Recent Common Ancestor (MRCA)O One-Name StudiesP Passenger lists genealogy terms Patrilineal PatronymicS Second cousin Second cousin once removed Second cousin twice removedT Third cousin Third cousin once removed Third cousin twice removed