Mary and Alice Vanantwerp were daughters of Lewis and Hulda Vanantwerp of Bacon Hill in Wilton, NY Saratoga County. Mary did indeed marry Ed Ward and Alice married Louis Bowman. Alice died in 1909 and Mary married Louis Bowman shortly thereafter. I assume Ed Ward had passed by then.
The father Lewis Vananwerp was the son of Alfred and Rachel Vanantwerp of Warren County, NY. That my be the connection as to why Mary married Ed Ward.
Alice and Mary had 5 or so brothers and sisters.