Hi, Ruth Ann, it's good to hear from you. The easiest way to find information in our genealogy database is to do a search using a person's name at the top genealogy page (select "Genealogical Database" from the halsema.org home page). Typing Louise Moore into the search box, and changing the search to look for "First name surname", will send you directly to the page with information on your grandmother. On that page you can click on the various links to move up and down the family tree, generate a list of ancestors or descendants, etc.We have a little bit different list of siblings for your great grandfather. Our database shows Lambertus, Cornelius, Jan, Lourent, Sijbrand, William, Martina, Bernardus, Martinus, and Nicolaas. We have the following detailed data on Willem (William) Halsema:
William, born on 16 October 1877, Texel, NH, NL, died on 12 February 1956, Lafayette, IN, USA, buried in 1956, St. Boniface, Lafayette, IN, USA (age at death: 78 years old).
Married on 14 January 1907, Lafayette, IN, USA, to Bertha Zink, born on 16 January 1888, Lafayette, IN, USA, died on 15 June 1963, Lafayette, IN, USA, buried in 1963, St. Boniface, Tippecanoe, Lafayette, IN, USA (age at death: 75 years old).
We have the following children listed for William and Bertha: Louise, Dorothy, Edward, Robert, Margaret, Carl, Gertrude, William, Bertha Betty, Rita.
While we try to have as much detail as possible in our database, including dates for important events, much of the detail will only display on the internet for people that were born more than 105 years ago. If your interested in particular information on you line, let me know and I can tell you if we have it.
We're also working to improve the accuracy of our information by having copies of key documents (birth certificates, marriage certifications, courthouse records, etc.). If you have anything that you can add, or corrections to any of the information, we'd be very interested.