Long Island Genealogy



Dedicated to providing reliable and consistent information for Long Island family  researchers since 1993. We are not a corporation or profit making company.  LIG is a personal venture with many helping hands. 

If you are researching your LONG ISLAND ANCESTRY you've come to the right place! - Join us on Long Island Surnames,
       An active resource for the Long Island family history community since 1993.  With the help of hundreds of long time regional researchers LIG has compiled a searchable database containing over 3,212,043 individuals, 1,215,933 families and 171,229 sources all directly connected to the early settlers and the families of Long Island.  It is an unparalleled regional database available for your research.
     Reduce your research time and expense by becoming a member of Long Island Surnames. Don't waste your time and money by doing what has already been done by others. 
Over three million Long Island ancestors and one million families - in one place - documented and easily searchable - download family Gedcom and pdf reports free, connect with others by by sharing your family information or simply make additions and corrections so others can benefit.
    Got a research question, need to update informationContact links are available on every page.  If it isn't online we're always happy to check our resources for you without charge - all part of being a member of our Long Island Surname family!!
Sign up now $5 per month, $20 for 3 Months or $50 a year or pay by check to Long Island Genealogy 3 Apex Dr Coram, NY 11727. Please include an email address with your check so we can send you your login


Birth Date Calculator - developed by Mac Titmus for Long Island Genealogy
The birth date calculator is a useful tool for genealogists. It is designed to calculate the birth date when the age at death and the date of death are the only facts known.
As we all know this is often the only information recorded on older headstones.

Please make entries in each box on lines 1 and 2
Use a zero where you do not have a number to enter
Item Day Month Year
Date of Death 
Age at death in Days - Months - Years
Calculated Birth Date Will Appear Here - Day - Month - Year:

To perform your calculation enter data on both lines 1 and 2 
then press this button