William Andrus is not a widely documented historical figure, so there may not be comprehensive information readily available about his personal life, including whom he married or how many children they had. If William Andrus is a lesser-known or contemporary individual, specific details may not be documented publicly to preserve personal privacy.

If he is a relatively unknown person or one closely associated with a smaller community or specific occupation, the best approach would be to look for local historical societies, family genealogy records, or databases such as Ancestry or FamilySearch. These resources may hold more specific personal information.

If you are able to share more context about William Andrus (such as timeframe, location, or notable achievements), it might help refine the search further.