What this record can establish
A will or administration can identify spouses, children, siblings, associates, residences, property and executors. Terms such as son, daughter or cousin may reflect legal or social usage, and an omitted relative is not automatically deceased or estranged. Inventories and bonds can reveal networks that the will itself does not name.
How to search without missing people
Identify the court or jurisdiction responsible at the date of death and distinguish the will, probate grant, administration, calendar and estate file. Search married names, aliases, residences and executors. If no probate appears, test another court, property location, intestacy, delayed administration or an estate below the relevant threshold.
How to evaluate and cite the result
Cite the court, jurisdiction, deceased person, document type and date, file or register reference, page or image and repository. Transcribe relationship language rather than silently modernising it. Compare named beneficiaries with civil, church, land and census evidence before turning a legal description into a biological relationship conclusion.