Deceased owner title issues

[Anthony Ellison]

To make a long story short.

Seller is deceased owners wife.

House was titled in the name of the deceased in his ex-wife who is also deceased. 

There are children from the previous marriage. The problem is they cant be found. The courts have tried to find them before but can't.

House is going to be auctioned off soon. Is there anything I can do to help these people.

*Houston, Harris county