What a family tree template is — and what it is not
A family tree template is a visual or tabular framework for recording genealogical relationships. What it is not is a genealogical record in itself. The template organises the information; the research behind it — certificates, census entries, parish registers, photographs — is the evidence that makes it reliable.
This distinction matters because family trees are unusually susceptible to the propagation of errors. If someone fills in a great-grandmother’s birth year as 1892 instead of 1902, and that tree is copied to a genealogy website, and other researchers copy from that website, the error gets embedded in dozens of trees within a few years. The genealogical standard is “cite everything.” Every date, every place, every name should have a source attached to it.
That said, a family tree template is still enormously useful even before you have done significant research. Starting with a four-generation ancestor chart — you, your parents, your grandparents, your great-grandparents — and filling in what you know from memory gives you a map of your gaps. The empty boxes are the research agenda.
Types of family tree chart
Ancestor chart (pedigree chart). The most common form. You are in the bottom left or centre; each generation fans out to the right or upward. Your two parents, their four parents, their eight parents — doubling each generation. A standard printed ancestor chart covers four generations (yourself to great-grandparents) on a single A4 or Letter-size page. Extended versions cover six to eight generations on A3 or tabloid paper.
Descendant chart. The reverse of an ancestor chart. Start with one ancestor — typically a great-grandparent or earlier — and show all their descendants forward through the generations. Useful for understanding how a large extended family is connected but grows quickly; a fifth-generation descendant chart for a prolific ancestor can have hundreds of people on it.
Family group sheet. A detailed record of a single nuclear family: husband, wife, children, with full birth/marriage/death details for each. Not a wall chart — a document. Used by genealogists to record the source citations and details for each family unit, then compiled into a larger tree. The family group sheet is the working document; the ancestor or descendant chart is the finished visual.
Fan chart. An ancestor chart arranged in a semicircle or full circle, with the subject in the centre and ancestors arranged in radiating arcs by generation. Visually striking; less space-efficient than a standard ancestor chart for detailed annotations but popular for display purposes.
Pedigree chart (animal breeding context). The same chart structure used for dog, horse, and cat breeding to record parentage and lineage over multiple generations. The format is identical to a human ancestor chart; the purpose is to show breeding lines and establish provenance for registration with breed societies (Kennel Club, Jockey Club, GCCF).
Using UK and US genealogical records
UK census records (1841–1921). England and Wales have census records from 1841 onwards. The 1921 census was released in January 2022 — a 100-year closure rule applies. The 1939 Register (a snap survey taken at the outbreak of World War II) is also available. Scotland has its own census records through ScotlandsPeople. Northern Ireland’s records are held at PRONI. Census records show household members, their relationships, ages, birthplaces, and occupations.
UK civil registration (from 1837). Birth, marriage, and death records have been civil-registered in England and Wales since 1837, in Scotland since 1855, and in Ireland (and Northern Ireland) since 1864. The General Register Office (GRO) holds the England and Wales indexes; FreeBMD has transcribed much of the pre-1984 index for free searching. Certificates can be ordered from the GRO or through local register offices.
UK parish registers (pre-1837). Before civil registration, baptisms, marriages, and burials were recorded in Church of England parish registers, typically from about 1538. Coverage is patchy — registers were damaged, lost, or never started in many parishes. The best access point is Findmypast or Ancestry for transcribed records, or the original registers on microfilm at county archives. The Bishop’s Transcripts (annual copies sent to the diocese) can sometimes fill gaps where the original register is missing.
US census records (1790–1940). Federal census records from 1790 to 1940 are publicly available through the National Archives and via Ancestry.com and FamilySearch. The 1950 census was released in 2022. Census records vary in detail by year: early censuses record only head of household; later ones (from 1880) list every household member by name. The 1940 census added place of birth and education level. Vital records (births, marriages, deaths) are held at the state level in the US; requirements and record-keeping quality vary significantly by state and time period.
Storing source citations
The difference between a family tree that anyone can use and one that only you can navigate is source citations. Every fact on your tree should be traceable to an original document.
The minimum citation information: document type, name of record, date of record, name of repository or website, access date. For physical records: also include any reference numbers (census piece and folio numbers, register page numbers, certificate numbers).
Most family tree software (Ancestry, FamilySearch, MacFamilyTree, Gramps, Reunion) has built-in source citation fields. If you are working from a template on paper or in a document, keep a separate sources list — either on the reverse of the chart or in an attached document — with numbered citations that you can reference from the tree.
GDPR considerations for sharing online
UK GDPR applies whenever you process personal data about living individuals. Publishing a family tree online — on Ancestry, on a personal website, or in a shared Google Doc — involves processing the personal data of any living person in the tree.
The practical approach: treat any person who might still be alive as “living” for publication purposes. On printed templates, this is usually handled by simply omitting birth years and other details for younger generations. On genealogy platforms, the standard practice is to suppress all information about people born within the last 100 years or flagged as living.
If you share a family tree in a private group or on a platform with access controls, the GDPR risk is lower because the audience is limited and presumably known to you. Public sharing requires more care.
Historical data about people who died before the living generation does not trigger GDPR concerns in practice, though technically data about identifiable deceased individuals is not entirely outside GDPR scope in all situations.
Common mistakes
Mistake 1: Accepting other people’s online trees as sources. Other users’ Ancestry trees are not primary sources. They are other people’s research, which may or may not be based on actual documents. Trees built from unverified copies of other trees cascade errors rapidly. Always trace a claim back to an original document.
Mistake 2: Recording only maiden names for women. Women should be recorded under their birth (maiden) surname in genealogical records, not their married name — unless you are recording their role as a spouse in a specific family group. A woman appears in her birth records under her maiden name; in marriage records under both names; in later census records under her married name. A good template records maiden name separately from married name.
Mistake 3: Conflating people with the same name. John Smith born 1845 in Liverpool is not necessarily the same John Smith who appears in the 1881 census in Manchester. Same name, different person. Before merging two records into one person, verify at least two independently corroborating details: same parent names, same birthplace, same spouse, same occupation.
Mistake 4: Skipping the 1939 Register. UK researchers often jump from the 1921 census directly to birth certificates for 20th-century research. The 1939 Register (taken on 29 September 1939) covers nearly every person in England and Wales and includes date of birth and occupation — more precise data than census records. It bridges the gap between the 1921 and 1951 censuses (the 1931 census was destroyed in a fire; no 1941 census was taken). Available on FindMyPast and Ancestry.
Mistake 5: Ignoring collateral lines. An ancestor’s siblings can provide vital evidence when the ancestor’s own records are missing. If your great-grandfather’s birth record is lost, his brother’s marriage certificate might name both parents, which confirms the grandparent generation. Researching siblings and cousins — the collateral lines — often solves problems that direct-line research cannot.
Worked example
The Harrington family tree: the researcher is building a four-generation ancestor chart starting with Margaret Ellen Harrington (1938–2026), born in Dorchester, Dorset.
Margaret’s parents: Alfred James Harrington (1910–1982) and Edith Harrington née Pike (1915–1998), married 1936 in Dorchester.
Alfred’s parents: George William Harrington (1882–1951) and Florence Harrington née Carter (1885–1961), found in the 1911 and 1921 England and Wales censuses.
Edith’s parents: Walter Pike (1887–1944) and Agnes Pike née Frost (1890–1963), confirmed by the 1911 census (Walter and Agnes listed as married with one daughter, Edith, aged 1 — birth year confirmed as 1910, one year off from the family memory of 1915, which the 1939 Register resolves: the 1939 entry lists Edith Pike, date of birth 3 March 1915 — the census age was approximate).
Each individual in the chart has a source citation. The conflicting birth year for Edith was identified only because the researcher checked both the 1911 census and the 1939 Register rather than accepting the family’s oral account.
The completed four-generation ancestor chart has 15 individuals. The researcher now has a research agenda: the previous generation (Alfred’s grandparents) requires searching the 1881 census and pre-1900 birth certificates.