What does a genealogist do? The research behind a family history
When we think of genealogy, it is common to picture a family tree made up of names, dates and places. However, researching a family’s history goes far beyond simply bringing this information together.
The role of a genealogist is to research, analyse and document family history using a range of sources. Their work makes it possible to identify ancestors, establish family relationships and gain a better understanding of the circumstances in which people from previous generations lived.
To achieve this, genealogists locate documents, compare information, verify data and seek to understand each record within its historical context. The result is not simply a beautiful family tree, but a well-founded reconstruction of a family’s history.
What does a genealogist do?
A genealogist’s work focuses on researching people and family relationships through documentary sources. Research may cover different historical periods and various types of documents, depending on the family and region being studied.
Among the most commonly used sources are:
- civil registration records,
- parish registers,
- wills and inventories,
- deeds and other notarial documents,
- censuses and population registers,
- court records,
- military records,
- documents relating to emigration and immigration,
- newspaper archives,
- historical books.
The information being sought does not always appear in a single document. In most cases, several sources need to be consulted to confirm a family relationship or clarify a piece of information.
This analysis is particularly important when people have the same name, when the spelling of surnames has changed, or when different places or discrepancies appear across documents.
Genealogical research goes beyond names and dates
Finding an ancestor’s name in a document is only a small part of the research. Historical records can provide a wealth of other information, such as a person’s occupation, residence, property, family relationships and other aspects of their life.
For this reason, a genealogist’s role is not limited to transcribing data. It is necessary to interpret the information and understand the context in which each document was created.
A will, for example, may reveal family relationships that do not appear in a marriage record. An inventory may provide information about a family’s property and possessions. A deed may help identify properties, relationships between people or changes of residence.
Each document can therefore provide a new clue for the research.
How is genealogical research carried out?
Genealogical research normally begins with the information already known about a family. Based on these details, the genealogist establishes lines of enquiry and searches for sources that can confirm, complete or correct the available information.
Research may involve archives, libraries, databases, digitised collections and other historical sources.
The digitisation of documents has made it possible to access an increasing number of sources remotely, many of which previously required a visit to the archive or institution responsible for their preservation. However, finding a document online does not mean that the research is complete. The source must be assessed, its contents understood and the information checked to ensure that it actually relates to the person being sought.
Why is it important to cross-check different sources?
One of the genealogist’s most important tasks is to verify the information they find.
Historical documents can contain discrepancies. A person may appear with a different age in two records, have their name spelt differently or be associated with another place. There may also be transcription errors, omissions or incomplete information.
For this reason, rigorous genealogical research should not rely on a single source.
The genealogist compares different documents and looks for evidence that confirms or contradicts a particular hypothesis. When necessary, further sources are consulted to clarify a family relationship.
This process helps reduce the risk of assigning people to the same family when, despite having similar names, they actually belong to different lineages.
The importance of sources in genealogy
Genealogical research requires careful attention to the origin of each piece of information. Finding a date in a family tree published online is very different from locating that same date in a parish register, a notarial document or another historical source contemporary with the events.
Source analysis makes it possible to distinguish documented information from hypotheses that still require confirmation.
This is particularly important when research extends back several generations, as an error in a family relationship can affect all the subsequent ancestry or descendants presented.
Reconstructing life stories from documents
The question that gives rise to genealogical research can be simple: who were my ancestors? The answer, however, is rarely found in a single document.
The genealogist’s role is to bring together different pieces of information, assess the sources and reconstruct, as far as the surviving documentation allows, the stories of the people who formed part of a family.
Rather than simply filling in a family tree, research makes it possible to discover the people behind the names and understand the circumstances in which they lived.
It is this process of research, analysis and interpretation that transforms old documents into family stories.

