Olsons in Texas

I descend from Gulbrand (aka Gilbert) Hansen Olson through his first son, Hans/Hantz/Juan. Hans had 3 children: first son was Stanley Philip (b. 1903); daughter, Emma; youngest son, William Erwin. Emma died young. I was born and raised in Corpus Christi, TX, the same town where my gg grandfather Gulbrand/Gilbert Olson died in 1916. I seek cousins from Hans' son, William Erwin Olson, and Hans' other siblings, Gilbert Nathan Olson, Emma ?, Blanche ?, Mary ?, Caia (Carrie) ? and Peter Olson.