related by william's first wife?

my husband's grandfather was named william-owned a resturant in either holyoke or east hampton and committed suicide there...he had a first wife named anna, i think, who died birthing their fourth child-lily...the other children were sidney, connie and milton...sid still lives in east hampton, lily's off the cape and connie is in amherst...milton moved to fort worth after his stint in the military-married my mother-in-law and had three children...they divorced in the 70's and he had remarried a couple more times...his last wife died about 11 years ago from brain cancer and he finally joined her 3 years ago...sounds like we might be related by rita who was his step-grandmother...after william's death, the 4 were raised by an aunt rose...he's asleep now or i'd have him help me fill in some blanks...