I found a place where you could start. FindAGrave.com is a great place. I started the search for Alex and Elizabeth and found the following:
Birth: 1881 (not 1885)
Death: 1952
Burial:
Van Liew Cemetery
New Brunswick
Middlesex County
New Jersey, USA
They are buried together and I have attached a photo of their headstone. From that beginning, you may find more information. When you start the search, type in Toth in the last name and leave the other name empty. Pull down the country to USA, state to New Jersey and county to Middlesex. Carteret is in Middlesex county. Chances are their children will be born in the same cemetery.
Hope this helps.
Good luck,
Chuck Snyder